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Finding the Fourth Proportional to 389,468.40, 584,221.80 and 202,844.40

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Solution

The fourth proportional to 389,468.40, 584,221.80 and 202,844.40 is: 304,276.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,468.40 : 584,221.80 = 202,844.40 : x
  2. Step 2: Convert to fraction form
    389,468.40/584,221.80 = 202,844.40/x
  3. Step 3: Cross multiply
    389,468.40x = 584,221.80 × 202,844.40
  4. Step 4: Simplify right side
    389,468.40x = 118,506,120,487.92
  5. Step 5: Solve for x
    x = 118,506,120,487.92/389,468.40
  6. Step 6: Final answer
    x = 304,276.60

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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.