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Finding the Fourth Proportional to 225,319.42, 337,857.88 and 90,315.72

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Solution

The fourth proportional to 225,319.42, 337,857.88 and 90,315.72 is: 135,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,319.42 : 337,857.88 = 90,315.72 : x
  2. Step 2: Convert to fraction form
    225,319.42/337,857.88 = 90,315.72/x
  3. Step 3: Cross multiply
    225,319.42x = 337,857.88 × 90,315.72
  4. Step 4: Simplify right side
    225,319.42x = 30,513,877,689.87
  5. Step 5: Solve for x
    x = 30,513,877,689.87/225,319.42
  6. Step 6: Final answer
    x = 135,424.98

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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.