Home / 266,136.30-399,204.45-218,897.10

Finding the Fourth Proportional to 266,136.30, 399,204.45 and 218,897.10

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Solution

The fourth proportional to 266,136.30, 399,204.45 and 218,897.10 is: 328,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,136.30 : 399,204.45 = 218,897.10 : x
  2. Step 2: Convert to fraction form
    266,136.30/399,204.45 = 218,897.10/x
  3. Step 3: Cross multiply
    266,136.30x = 399,204.45 × 218,897.10
  4. Step 4: Simplify right side
    266,136.30x = 87,384,696,412.10
  5. Step 5: Solve for x
    x = 87,384,696,412.10/266,136.30
  6. Step 6: Final answer
    x = 328,345.65

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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.