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Finding the Fourth Proportional to 413,521.30, 620,281.95 and 133,066.90

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Solution

The fourth proportional to 413,521.30, 620,281.95 and 133,066.90 is: 199,600.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,521.30 : 620,281.95 = 133,066.90 : x
  2. Step 2: Convert to fraction form
    413,521.30/620,281.95 = 133,066.90/x
  3. Step 3: Cross multiply
    413,521.30x = 620,281.95 × 133,066.90
  4. Step 4: Simplify right side
    413,521.30x = 82,538,996,212.46
  5. Step 5: Solve for x
    x = 82,538,996,212.46/413,521.30
  6. Step 6: Final answer
    x = 199,600.35

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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.