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Finding the Fourth Proportional to 359,817.60, 539,726.40 and 289,833.60

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Solution

The fourth proportional to 359,817.60, 539,726.40 and 289,833.60 is: 434,750.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,817.60 : 539,726.40 = 289,833.60 : x
  2. Step 2: Convert to fraction form
    359,817.60/539,726.40 = 289,833.60/x
  3. Step 3: Cross multiply
    359,817.60x = 539,726.40 × 289,833.60
  4. Step 4: Simplify right side
    359,817.60x = 156,430,845,527.04
  5. Step 5: Solve for x
    x = 156,430,845,527.04/359,817.60
  6. Step 6: Final answer
    x = 434,750.40

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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.