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Finding the Fourth Proportional to 640,278.16, 960,286.02 and 235,330.81

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Solution

The fourth proportional to 640,278.16, 960,286.02 and 235,330.81 is: 352,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,278.16 : 960,286.02 = 235,330.81 : x
  2. Step 2: Convert to fraction form
    640,278.16/960,286.02 = 235,330.81/x
  3. Step 3: Cross multiply
    640,278.16x = 960,286.02 × 235,330.81
  4. Step 4: Simplify right side
    640,278.16x = 225,984,883,635.07
  5. Step 5: Solve for x
    x = 225,984,883,635.07/640,278.16
  6. Step 6: Final answer
    x = 352,947.98

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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.