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Finding the Fourth Proportional to 401,449.61, 602,174.87 and 135,187.83

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Solution

The fourth proportional to 401,449.61, 602,174.87 and 135,187.83 is: 202,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,449.61 : 602,174.87 = 135,187.83 : x
  2. Step 2: Convert to fraction form
    401,449.61/602,174.87 = 135,187.83/x
  3. Step 3: Cross multiply
    401,449.61x = 602,174.87 × 135,187.83
  4. Step 4: Simplify right side
    401,449.61x = 81,406,713,955.83
  5. Step 5: Solve for x
    x = 81,406,713,955.83/401,449.61
  6. Step 6: Final answer
    x = 202,781.90

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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.