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Finding the Fourth Proportional to 273,459.20, 410,188.80 and 260,337.20

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Solution

The fourth proportional to 273,459.20, 410,188.80 and 260,337.20 is: 390,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,459.20 : 410,188.80 = 260,337.20 : x
  2. Step 2: Convert to fraction form
    273,459.20/410,188.80 = 260,337.20/x
  3. Step 3: Cross multiply
    273,459.20x = 410,188.80 × 260,337.20
  4. Step 4: Simplify right side
    273,459.20x = 106,787,403,663.36
  5. Step 5: Solve for x
    x = 106,787,403,663.36/273,459.20
  6. Step 6: Final answer
    x = 390,505.80

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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.