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Finding the Fourth Proportional to 538,523.40, 807,785.10 and 159,457.80

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Solution

The fourth proportional to 538,523.40, 807,785.10 and 159,457.80 is: 239,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,523.40 : 807,785.10 = 159,457.80 : x
  2. Step 2: Convert to fraction form
    538,523.40/807,785.10 = 159,457.80/x
  3. Step 3: Cross multiply
    538,523.40x = 807,785.10 × 159,457.80
  4. Step 4: Simplify right side
    538,523.40x = 128,807,634,918.78
  5. Step 5: Solve for x
    x = 128,807,634,918.78/538,523.40
  6. Step 6: Final answer
    x = 239,186.70

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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.