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Finding the Fourth Proportional to 372,677.40, 559,016.10 and 266,389.20

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Solution

The fourth proportional to 372,677.40, 559,016.10 and 266,389.20 is: 399,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,677.40 : 559,016.10 = 266,389.20 : x
  2. Step 2: Convert to fraction form
    372,677.40/559,016.10 = 266,389.20/x
  3. Step 3: Cross multiply
    372,677.40x = 559,016.10 × 266,389.20
  4. Step 4: Simplify right side
    372,677.40x = 148,915,851,666.12
  5. Step 5: Solve for x
    x = 148,915,851,666.12/372,677.40
  6. Step 6: Final answer
    x = 399,583.80

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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.