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Finding the Fourth Proportional to 538,002.40, 807,003.60 and 258,066.40

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Solution

The fourth proportional to 538,002.40, 807,003.60 and 258,066.40 is: 387,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,002.40 : 807,003.60 = 258,066.40 : x
  2. Step 2: Convert to fraction form
    538,002.40/807,003.60 = 258,066.40/x
  3. Step 3: Cross multiply
    538,002.40x = 807,003.60 × 258,066.40
  4. Step 4: Simplify right side
    538,002.40x = 208,260,513,839.04
  5. Step 5: Solve for x
    x = 208,260,513,839.04/538,002.40
  6. Step 6: Final answer
    x = 387,099.60

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Similar ratio
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1.5x scale

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.