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Finding the Fourth Proportional to 359,421.60, 539,132.40 and 289,437.60

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Solution

The fourth proportional to 359,421.60, 539,132.40 and 289,437.60 is: 434,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,421.60 : 539,132.40 = 289,437.60 : x
  2. Step 2: Convert to fraction form
    359,421.60/539,132.40 = 289,437.60/x
  3. Step 3: Cross multiply
    359,421.60x = 539,132.40 × 289,437.60
  4. Step 4: Simplify right side
    359,421.60x = 156,045,187,938.24
  5. Step 5: Solve for x
    x = 156,045,187,938.24/359,421.60
  6. Step 6: Final answer
    x = 434,156.40

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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.