Home / 278,081,428,688.40-417,122,143,032.60-68,702,177,744.40

Finding the Fourth Proportional to 278,081,428,688.40, 417,122,143,032.60 and 68,702,177,744.40

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Solution

The fourth proportional to 278,081,428,688.40, 417,122,143,032.60 and 68,702,177,744.40 is: 103,053,266,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,081,428,688.40 : 417,122,143,032.60 = 68,702,177,744.40 : x
  2. Step 2: Convert to fraction form
    278,081,428,688.40/417,122,143,032.60 = 68,702,177,744.40/x
  3. Step 3: Cross multiply
    278,081,428,688.40x = 417,122,143,032.60 × 68,702,177,744.40
  4. Step 4: Simplify right side
    278,081,428,688.40x = 28,657,199,611,750,723,354,624
  5. Step 5: Solve for x
    x = 28,657,199,611,750,723,354,624/278,081,428,688.40
  6. Step 6: Final answer
    x = 103,053,266,616.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.