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Finding the Fourth Proportional to 359,408.80, 539,113.20 and 247,434.40

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Solution

The fourth proportional to 359,408.80, 539,113.20 and 247,434.40 is: 371,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,408.80 : 539,113.20 = 247,434.40 : x
  2. Step 2: Convert to fraction form
    359,408.80/539,113.20 = 247,434.40/x
  3. Step 3: Cross multiply
    359,408.80x = 539,113.20 × 247,434.40
  4. Step 4: Simplify right side
    359,408.80x = 133,395,151,174.08
  5. Step 5: Solve for x
    x = 133,395,151,174.08/359,408.80
  6. Step 6: Final answer
    x = 371,151.60

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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.