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Finding the Fourth Proportional to 406,001.40, 608,742.90 and 169,438.20

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Solution

The fourth proportional to 406,001.40, 608,742.90 and 169,438.20 is: 254,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,001.40 : 608,742.90 = 169,438.20 : x
  2. Step 2: Convert to fraction form
    406,001.40/608,742.90 = 169,438.20/x
  3. Step 3: Cross multiply
    406,001.40x = 608,742.90 × 169,438.20
  4. Step 4: Simplify right side
    406,001.40x = 103,144,301,238.78
  5. Step 5: Solve for x
    x = 103,144,301,238.78/406,001.40
  6. Step 6: Final answer
    x = 254,049.13

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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.