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Finding the Fourth Proportional to 393,510.96, 589,915.80 and 144,134.64

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Solution

The fourth proportional to 393,510.96, 589,915.80 and 144,134.64 is: 216,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,510.96 : 589,915.80 = 144,134.64 : x
  2. Step 2: Convert to fraction form
    393,510.96/589,915.80 = 144,134.64/x
  3. Step 3: Cross multiply
    393,510.96x = 589,915.80 × 144,134.64
  4. Step 4: Simplify right side
    393,510.96x = 85,027,301,463.31
  5. Step 5: Solve for x
    x = 85,027,301,463.31/393,510.96
  6. Step 6: Final answer
    x = 216,073.53

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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.