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Finding the Fourth Proportional to 330,526.32, 495,443.48 and 138,510.69

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Solution

The fourth proportional to 330,526.32, 495,443.48 and 138,510.69 is: 207,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,526.32 : 495,443.48 = 138,510.69 : x
  2. Step 2: Convert to fraction form
    330,526.32/495,443.48 = 138,510.69/x
  3. Step 3: Cross multiply
    330,526.32x = 495,443.48 × 138,510.69
  4. Step 4: Simplify right side
    330,526.32x = 68,624,217,578.25
  5. Step 5: Solve for x
    x = 68,624,217,578.25/330,526.32
  6. Step 6: Final answer
    x = 207,621.04

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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.