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Finding the Fourth Proportional to 609,315.12, 914,159.52 and 272,639.16

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Solution

The fourth proportional to 609,315.12, 914,159.52 and 272,639.16 is: 409,042.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,315.12 : 914,159.52 = 272,639.16 : x
  2. Step 2: Convert to fraction form
    609,315.12/914,159.52 = 272,639.16/x
  3. Step 3: Cross multiply
    609,315.12x = 914,159.52 × 272,639.16
  4. Step 4: Simplify right side
    609,315.12x = 249,235,683,638.80
  5. Step 5: Solve for x
    x = 249,235,683,638.80/609,315.12
  6. Step 6: Final answer
    x = 409,042.34

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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.