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Finding the Fourth Proportional to 267,655.40, 401,483.82 and 90,287

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Solution

The fourth proportional to 267,655.40, 401,483.82 and 90,287 is: 135,430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,655.40 : 401,483.82 = 90,287 : x
  2. Step 2: Convert to fraction form
    267,655.40/401,483.82 = 90,287/x
  3. Step 3: Cross multiply
    267,655.40x = 401,483.82 × 90,287
  4. Step 4: Simplify right side
    267,655.40x = 36,248,769,656.34
  5. Step 5: Solve for x
    x = 36,248,769,656.34/267,655.40
  6. Step 6: Final answer
    x = 135,430.74

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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.