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Finding the Fourth Proportional to 230,347.41, 317,889.24 and 128,373

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Solution

The fourth proportional to 230,347.41, 317,889.24 and 128,373 is: 177,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,347.41 : 317,889.24 = 128,373 : x
  2. Step 2: Convert to fraction form
    230,347.41/317,889.24 = 128,373/x
  3. Step 3: Cross multiply
    230,347.41x = 317,889.24 × 128,373
  4. Step 4: Simplify right side
    230,347.41x = 40,808,395,406.52
  5. Step 5: Solve for x
    x = 40,808,395,406.52/230,347.41
  6. Step 6: Final answer
    x = 177,160.21

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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.