Home / 266,721.90-399,098.70-243,102.30

Finding the Fourth Proportional to 266,721.90, 399,098.70 and 243,102.30

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Solution

The fourth proportional to 266,721.90, 399,098.70 and 243,102.30 is: 363,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,721.90 : 399,098.70 = 243,102.30 : x
  2. Step 2: Convert to fraction form
    266,721.90/399,098.70 = 243,102.30/x
  3. Step 3: Cross multiply
    266,721.90x = 399,098.70 × 243,102.30
  4. Step 4: Simplify right side
    266,721.90x = 97,021,811,897.01
  5. Step 5: Solve for x
    x = 97,021,811,897.01/266,721.90
  6. Step 6: Final answer
    x = 363,756.45

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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.