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Finding the Fourth Proportional to 388,909.60, 583,594.80 and 283,463.20

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Solution

The fourth proportional to 388,909.60, 583,594.80 and 283,463.20 is: 425,362.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,909.60 : 583,594.80 = 283,463.20 : x
  2. Step 2: Convert to fraction form
    388,909.60/583,594.80 = 283,463.20/x
  3. Step 3: Cross multiply
    388,909.60x = 583,594.80 × 283,463.20
  4. Step 4: Simplify right side
    388,909.60x = 165,427,649,511.36
  5. Step 5: Solve for x
    x = 165,427,649,511.36/388,909.60
  6. Step 6: Final answer
    x = 425,362.73

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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.