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Finding the Fourth Proportional to 266,353.20, 399,681.30 and 97,851.90

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Solution

The fourth proportional to 266,353.20, 399,681.30 and 97,851.90 is: 146,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,353.20 : 399,681.30 = 97,851.90 : x
  2. Step 2: Convert to fraction form
    266,353.20/399,681.30 = 97,851.90/x
  3. Step 3: Cross multiply
    266,353.20x = 399,681.30 × 97,851.90
  4. Step 4: Simplify right side
    266,353.20x = 39,109,574,599.47
  5. Step 5: Solve for x
    x = 39,109,574,599.47/266,353.20
  6. Step 6: Final answer
    x = 146,833.51

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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.