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Finding the Fourth Proportional to 493,565.20, 740,420.70 and 156,637.60

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Solution

The fourth proportional to 493,565.20, 740,420.70 and 156,637.60 is: 234,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,565.20 : 740,420.70 = 156,637.60 : x
  2. Step 2: Convert to fraction form
    493,565.20/740,420.70 = 156,637.60/x
  3. Step 3: Cross multiply
    493,565.20x = 740,420.70 × 156,637.60
  4. Step 4: Simplify right side
    493,565.20x = 115,977,721,438.32
  5. Step 5: Solve for x
    x = 115,977,721,438.32/493,565.20
  6. Step 6: Final answer
    x = 234,979.54

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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.