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Finding the Fourth Proportional to 413,545.30, 620,317.95 and 133,090.90

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Solution

The fourth proportional to 413,545.30, 620,317.95 and 133,090.90 is: 199,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,545.30 : 620,317.95 = 133,090.90 : x
  2. Step 2: Convert to fraction form
    413,545.30/620,317.95 = 133,090.90/x
  3. Step 3: Cross multiply
    413,545.30x = 620,317.95 × 133,090.90
  4. Step 4: Simplify right side
    413,545.30x = 82,558,674,251.66
  5. Step 5: Solve for x
    x = 82,558,674,251.66/413,545.30
  6. Step 6: Final answer
    x = 199,636.35

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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.