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Finding the Fourth Proportional to 639,264.38, 958,898.39 and 165,953.84

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Solution

The fourth proportional to 639,264.38, 958,898.39 and 165,953.84 is: 248,931.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,264.38 : 958,898.39 = 165,953.84 : x
  2. Step 2: Convert to fraction form
    639,264.38/958,898.39 = 165,953.84/x
  3. Step 3: Cross multiply
    639,264.38x = 958,898.39 × 165,953.84
  4. Step 4: Simplify right side
    639,264.38x = 159,132,864,366.06
  5. Step 5: Solve for x
    x = 159,132,864,366.06/639,264.38
  6. Step 6: Final answer
    x = 248,931.23

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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.