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Finding the Fourth Proportional to 239,781.60, 330,695.46 and 144,270.45

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Solution

The fourth proportional to 239,781.60, 330,695.46 and 144,270.45 is: 198,970.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,781.60 : 330,695.46 = 144,270.45 : x
  2. Step 2: Convert to fraction form
    239,781.60/330,695.46 = 144,270.45/x
  3. Step 3: Cross multiply
    239,781.60x = 330,695.46 × 144,270.45
  4. Step 4: Simplify right side
    239,781.60x = 47,709,582,827.16
  5. Step 5: Solve for x
    x = 47,709,582,827.16/239,781.60
  6. Step 6: Final answer
    x = 198,970.99

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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.