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Finding the Fourth Proportional to 408,865.40, 613,298.10 and 249,433.10

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Solution

The fourth proportional to 408,865.40, 613,298.10 and 249,433.10 is: 374,149.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,865.40 : 613,298.10 = 249,433.10 : x
  2. Step 2: Convert to fraction form
    408,865.40/613,298.10 = 249,433.10/x
  3. Step 3: Cross multiply
    408,865.40x = 613,298.10 × 249,433.10
  4. Step 4: Simplify right side
    408,865.40x = 152,976,846,307.11
  5. Step 5: Solve for x
    x = 152,976,846,307.11/408,865.40
  6. Step 6: Final answer
    x = 374,149.65

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Double scale
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Similar ratio
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1.5x scale

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.