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Finding the Fourth Proportional to 266,140.10, 399,210.15 and 133,040.90

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Solution

The fourth proportional to 266,140.10, 399,210.15 and 133,040.90 is: 199,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,140.10 : 399,210.15 = 133,040.90 : x
  2. Step 2: Convert to fraction form
    266,140.10/399,210.15 = 133,040.90/x
  3. Step 3: Cross multiply
    266,140.10x = 399,210.15 × 133,040.90
  4. Step 4: Simplify right side
    266,140.10x = 53,111,277,645.14
  5. Step 5: Solve for x
    x = 53,111,277,645.14/266,140.10
  6. Step 6: Final answer
    x = 199,561.35

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Similar ratio
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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.