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Finding the Fourth Proportional to 287,708.40, 431,562.60 and 234,564.30

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Solution

The fourth proportional to 287,708.40, 431,562.60 and 234,564.30 is: 351,846.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,708.40 : 431,562.60 = 234,564.30 : x
  2. Step 2: Convert to fraction form
    287,708.40/431,562.60 = 234,564.30/x
  3. Step 3: Cross multiply
    287,708.40x = 431,562.60 × 234,564.30
  4. Step 4: Simplify right side
    287,708.40x = 101,229,179,175.18
  5. Step 5: Solve for x
    x = 101,229,179,175.18/287,708.40
  6. Step 6: Final answer
    x = 351,846.45

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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.