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Finding the Fourth Proportional to 267,689.80, 369,430.70 and 152,985.36

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Solution

The fourth proportional to 267,689.80, 369,430.70 and 152,985.36 is: 211,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,689.80 : 369,430.70 = 152,985.36 : x
  2. Step 2: Convert to fraction form
    267,689.80/369,430.70 = 152,985.36/x
  3. Step 3: Cross multiply
    267,689.80x = 369,430.70 × 152,985.36
  4. Step 4: Simplify right side
    267,689.80x = 56,517,488,634.55
  5. Step 5: Solve for x
    x = 56,517,488,634.55/267,689.80
  6. Step 6: Final answer
    x = 211,130.53

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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.