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Finding the Fourth Proportional to 249,658.40, 374,508.22 and 81,174.90

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Solution

The fourth proportional to 249,658.40, 374,508.22 and 81,174.90 is: 121,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,658.40 : 374,508.22 = 81,174.90 : x
  2. Step 2: Convert to fraction form
    249,658.40/374,508.22 = 81,174.90/x
  3. Step 3: Cross multiply
    249,658.40x = 374,508.22 × 81,174.90
  4. Step 4: Simplify right side
    249,658.40x = 30,400,667,307.68
  5. Step 5: Solve for x
    x = 30,400,667,307.68/249,658.40
  6. Step 6: Final answer
    x = 121,769.05

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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.