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Finding the Fourth Proportional to 520,875.60, 781,356.60 and 165,879.60

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Solution

The fourth proportional to 520,875.60, 781,356.60 and 165,879.60 is: 248,833.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,875.60 : 781,356.60 = 165,879.60 : x
  2. Step 2: Convert to fraction form
    520,875.60/781,356.60 = 165,879.60/x
  3. Step 3: Cross multiply
    520,875.60x = 781,356.60 × 165,879.60
  4. Step 4: Simplify right side
    520,875.60x = 129,611,120,265.36
  5. Step 5: Solve for x
    x = 129,611,120,265.36/520,875.60
  6. Step 6: Final answer
    x = 248,833.16

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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.