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Finding the Fourth Proportional to 437,718.80, 656,117.40 and 171,376.40

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Solution

The fourth proportional to 437,718.80, 656,117.40 and 171,376.40 is: 256,884.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,718.80 : 656,117.40 = 171,376.40 : x
  2. Step 2: Convert to fraction form
    437,718.80/656,117.40 = 171,376.40/x
  3. Step 3: Cross multiply
    437,718.80x = 656,117.40 × 171,376.40
  4. Step 4: Simplify right side
    437,718.80x = 112,443,037,989.36
  5. Step 5: Solve for x
    x = 112,443,037,989.36/437,718.80
  6. Step 6: Final answer
    x = 256,884.19

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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.