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Finding the Fourth Proportional to 208,294.73, 287,445.23 and 112,799.21

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Solution

The fourth proportional to 208,294.73, 287,445.23 and 112,799.21 is: 155,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,294.73 : 287,445.23 = 112,799.21 : x
  2. Step 2: Convert to fraction form
    208,294.73/287,445.23 = 112,799.21/x
  3. Step 3: Cross multiply
    208,294.73x = 287,445.23 × 112,799.21
  4. Step 4: Simplify right side
    208,294.73x = 32,423,594,298.27
  5. Step 5: Solve for x
    x = 32,423,594,298.27/208,294.73
  6. Step 6: Final answer
    x = 155,662.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.