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Finding the Fourth Proportional to 403,355.80, 556,218.42 and 267,342.52

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Solution

The fourth proportional to 403,355.80, 556,218.42 and 267,342.52 is: 368,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,355.80 : 556,218.42 = 267,342.52 : x
  2. Step 2: Convert to fraction form
    403,355.80/556,218.42 = 267,342.52/x
  3. Step 3: Cross multiply
    403,355.80x = 556,218.42 × 267,342.52
  4. Step 4: Simplify right side
    403,355.80x = 148,700,834,073.22
  5. Step 5: Solve for x
    x = 148,700,834,073.22/403,355.80
  6. Step 6: Final answer
    x = 368,659.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.