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Finding the Fourth Proportional to 508,336.53, 761,972.78 and 171,260.70

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Solution

The fourth proportional to 508,336.53, 761,972.78 and 171,260.70 is: 256,711.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,336.53 : 761,972.78 = 171,260.70 : x
  2. Step 2: Convert to fraction form
    508,336.53/761,972.78 = 171,260.70/x
  3. Step 3: Cross multiply
    508,336.53x = 761,972.78 × 171,260.70
  4. Step 4: Simplify right side
    508,336.53x = 130,495,990,827.44
  5. Step 5: Solve for x
    x = 130,495,990,827.44/508,336.53
  6. Step 6: Final answer
    x = 256,711.81

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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.