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Finding the Fourth Proportional to 359,448.28, 539,241.54 and 137,815

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Solution

The fourth proportional to 359,448.28, 539,241.54 and 137,815 is: 206,749.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,448.28 : 539,241.54 = 137,815 : x
  2. Step 2: Convert to fraction form
    359,448.28/539,241.54 = 137,815/x
  3. Step 3: Cross multiply
    359,448.28x = 539,241.54 × 137,815
  4. Step 4: Simplify right side
    359,448.28x = 74,315,572,835.10
  5. Step 5: Solve for x
    x = 74,315,572,835.10/359,448.28
  6. Step 6: Final answer
    x = 206,749.00

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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.