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Finding the Fourth Proportional to 559,889.28, 772,657.92 and 305,251.20

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Solution

The fourth proportional to 559,889.28, 772,657.92 and 305,251.20 is: 421,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,889.28 : 772,657.92 = 305,251.20 : x
  2. Step 2: Convert to fraction form
    559,889.28/772,657.92 = 305,251.20/x
  3. Step 3: Cross multiply
    559,889.28x = 772,657.92 × 305,251.20
  4. Step 4: Simplify right side
    559,889.28x = 235,854,757,269.50
  5. Step 5: Solve for x
    x = 235,854,757,269.50/559,889.28
  6. Step 6: Final answer
    x = 421,252.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.