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Finding the Fourth Proportional to 239,775.72, 330,687.36 and 144,264.58

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Solution

The fourth proportional to 239,775.72, 330,687.36 and 144,264.58 is: 198,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,775.72 : 330,687.36 = 144,264.58 : x
  2. Step 2: Convert to fraction form
    239,775.72/330,687.36 = 144,264.58/x
  3. Step 3: Cross multiply
    239,775.72x = 330,687.36 × 144,264.58
  4. Step 4: Simplify right side
    239,775.72x = 47,706,473,101.71
  5. Step 5: Solve for x
    x = 47,706,473,101.71/239,775.72
  6. Step 6: Final answer
    x = 198,962.90

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1.5x scale

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.