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Finding the Fourth Proportional to 385,931.28, 532,585.16 and 235,028.28

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Solution

The fourth proportional to 385,931.28, 532,585.16 and 235,028.28 is: 324,339.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,931.28 : 532,585.16 = 235,028.28 : x
  2. Step 2: Convert to fraction form
    385,931.28/532,585.16 = 235,028.28/x
  3. Step 3: Cross multiply
    385,931.28x = 532,585.16 × 235,028.28
  4. Step 4: Simplify right side
    385,931.28x = 125,172,574,108.33
  5. Step 5: Solve for x
    x = 125,172,574,108.33/385,931.28
  6. Step 6: Final answer
    x = 324,339.02

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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.