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Finding the Fourth Proportional to 359,254.20, 538,881.30 and 354,005.40

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Solution

The fourth proportional to 359,254.20, 538,881.30 and 354,005.40 is: 531,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,254.20 : 538,881.30 = 354,005.40 : x
  2. Step 2: Convert to fraction form
    359,254.20/538,881.30 = 354,005.40/x
  3. Step 3: Cross multiply
    359,254.20x = 538,881.30 × 354,005.40
  4. Step 4: Simplify right side
    359,254.20x = 190,766,890,159.02
  5. Step 5: Solve for x
    x = 190,766,890,159.02/359,254.20
  6. Step 6: Final answer
    x = 531,008.10

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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.