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Finding the Fourth Proportional to 266,209.80, 399,424.05 and 97,810.80

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Solution

The fourth proportional to 266,209.80, 399,424.05 and 97,810.80 is: 146,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,209.80 : 399,424.05 = 97,810.80 : x
  2. Step 2: Convert to fraction form
    266,209.80/399,424.05 = 97,810.80/x
  3. Step 3: Cross multiply
    266,209.80x = 399,424.05 × 97,810.80
  4. Step 4: Simplify right side
    266,209.80x = 39,067,985,869.74
  5. Step 5: Solve for x
    x = 39,067,985,869.74/266,209.80
  6. Step 6: Final answer
    x = 146,756.38

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1.5x scale

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.