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Finding the Fourth Proportional to 267,987, 401,454.95 and 155,430.75

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Solution

The fourth proportional to 267,987, 401,454.95 and 155,430.75 is: 232,841.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,987 : 401,454.95 = 155,430.75 : x
  2. Step 2: Convert to fraction form
    267,987/401,454.95 = 155,430.75/x
  3. Step 3: Cross multiply
    267,987x = 401,454.95 × 155,430.75
  4. Step 4: Simplify right side
    267,987x = 62,398,443,969.71
  5. Step 5: Solve for x
    x = 62,398,443,969.71/267,987
  6. Step 6: Final answer
    x = 232,841.31

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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.