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Finding the Fourth Proportional to 359,929.31, 539,838.47 and 120,047.40

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Solution

The fourth proportional to 359,929.31, 539,838.47 and 120,047.40 is: 180,052.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,929.31 : 539,838.47 = 120,047.40 : x
  2. Step 2: Convert to fraction form
    359,929.31/539,838.47 = 120,047.40/x
  3. Step 3: Cross multiply
    359,929.31x = 539,838.47 × 120,047.40
  4. Step 4: Simplify right side
    359,929.31x = 64,806,205,043.60
  5. Step 5: Solve for x
    x = 64,806,205,043.60/359,929.31
  6. Step 6: Final answer
    x = 180,052.59

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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.