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Finding the Fourth Proportional to 391,262.80, 586,213.80 and 180,468.40

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Solution

The fourth proportional to 391,262.80, 586,213.80 and 180,468.40 is: 270,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,262.80 : 586,213.80 = 180,468.40 : x
  2. Step 2: Convert to fraction form
    391,262.80/586,213.80 = 180,468.40/x
  3. Step 3: Cross multiply
    391,262.80x = 586,213.80 × 180,468.40
  4. Step 4: Simplify right side
    391,262.80x = 105,793,066,543.92
  5. Step 5: Solve for x
    x = 105,793,066,543.92/391,262.80
  6. Step 6: Final answer
    x = 270,388.77

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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.