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Finding the Fourth Proportional to 144,143.84, 216,220.64 and 38,963.72

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Solution

The fourth proportional to 144,143.84, 216,220.64 and 38,963.72 is: 58,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,143.84 : 216,220.64 = 38,963.72 : x
  2. Step 2: Convert to fraction form
    144,143.84/216,220.64 = 38,963.72/x
  3. Step 3: Cross multiply
    144,143.84x = 216,220.64 × 38,963.72
  4. Step 4: Simplify right side
    144,143.84x = 8,424,760,475.18
  5. Step 5: Solve for x
    x = 8,424,760,475.18/144,143.84
  6. Step 6: Final answer
    x = 58,446.90

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1.5x scale

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.