Home / 298,628,880.40-447,943,320.60-83,218,128.40

Finding the Fourth Proportional to 298,628,880.40, 447,943,320.60 and 83,218,128.40

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Solution

The fourth proportional to 298,628,880.40, 447,943,320.60 and 83,218,128.40 is: 124,827,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,628,880.40 : 447,943,320.60 = 83,218,128.40 : x
  2. Step 2: Convert to fraction form
    298,628,880.40/447,943,320.60 = 83,218,128.40/x
  3. Step 3: Cross multiply
    298,628,880.40x = 447,943,320.60 × 83,218,128.40
  4. Step 4: Simplify right side
    298,628,880.40x = 37,277,004,769,613,168
  5. Step 5: Solve for x
    x = 37,277,004,769,613,168/298,628,880.40
  6. Step 6: Final answer
    x = 124,827,192.60

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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.