Home / 278,931,246.90-384,913,561.86-151,772,450.25

Finding the Fourth Proportional to 278,931,246.90, 384,913,561.86 and 151,772,450.25

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Solution

The fourth proportional to 278,931,246.90, 384,913,561.86 and 151,772,450.25 is: 209,439,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,931,246.90 : 384,913,561.86 = 151,772,450.25 : x
  2. Step 2: Convert to fraction form
    278,931,246.90/384,913,561.86 = 151,772,450.25/x
  3. Step 3: Cross multiply
    278,931,246.90x = 384,913,561.86 × 151,772,450.25
  4. Step 4: Simplify right side
    278,931,246.90x = 58,419,274,417,947,152
  5. Step 5: Solve for x
    x = 58,419,274,417,947,152/278,931,246.90
  6. Step 6: Final answer
    x = 209,439,691.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.