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Finding the Fourth Proportional to 311,386.94, 429,625.07 and 175,373.31

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Solution

The fourth proportional to 311,386.94, 429,625.07 and 175,373.31 is: 241,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,386.94 : 429,625.07 = 175,373.31 : x
  2. Step 2: Convert to fraction form
    311,386.94/429,625.07 = 175,373.31/x
  3. Step 3: Cross multiply
    311,386.94x = 429,625.07 × 175,373.31
  4. Step 4: Simplify right side
    311,386.94x = 75,344,769,708.02
  5. Step 5: Solve for x
    x = 75,344,769,708.02/311,386.94
  6. Step 6: Final answer
    x = 241,965.10

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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.