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Finding the Fourth Proportional to 359,988.86, 539,801.78 and 120,017.58

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Solution

The fourth proportional to 359,988.86, 539,801.78 and 120,017.58 is: 179,965.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,988.86 : 539,801.78 = 120,017.58 : x
  2. Step 2: Convert to fraction form
    359,988.86/539,801.78 = 120,017.58/x
  3. Step 3: Cross multiply
    359,988.86x = 539,801.78 × 120,017.58
  4. Step 4: Simplify right side
    359,988.86x = 64,785,702,715.20
  5. Step 5: Solve for x
    x = 64,785,702,715.20/359,988.86
  6. Step 6: Final answer
    x = 179,965.86

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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.