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Finding the Fourth Proportional to 389,729.60, 584,594.40 and 109,294.40

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Solution

The fourth proportional to 389,729.60, 584,594.40 and 109,294.40 is: 163,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,729.60 : 584,594.40 = 109,294.40 : x
  2. Step 2: Convert to fraction form
    389,729.60/584,594.40 = 109,294.40/x
  3. Step 3: Cross multiply
    389,729.60x = 584,594.40 × 109,294.40
  4. Step 4: Simplify right side
    389,729.60x = 63,892,894,191.36
  5. Step 5: Solve for x
    x = 63,892,894,191.36/389,729.60
  6. Step 6: Final answer
    x = 163,941.60

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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.