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Finding the Fourth Proportional to 256,330.38, 353,746.02 and 147,434.53

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Solution

The fourth proportional to 256,330.38, 353,746.02 and 147,434.53 is: 203,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,330.38 : 353,746.02 = 147,434.53 : x
  2. Step 2: Convert to fraction form
    256,330.38/353,746.02 = 147,434.53/x
  3. Step 3: Cross multiply
    256,330.38x = 353,746.02 × 147,434.53
  4. Step 4: Simplify right side
    256,330.38x = 52,154,378,198.07
  5. Step 5: Solve for x
    x = 52,154,378,198.07/256,330.38
  6. Step 6: Final answer
    x = 203,465.46

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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.