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Finding the Fourth Proportional to 266,969.40, 399,870.90 and 207,337.20

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Solution

The fourth proportional to 266,969.40, 399,870.90 and 207,337.20 is: 310,552.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,969.40 : 399,870.90 = 207,337.20 : x
  2. Step 2: Convert to fraction form
    266,969.40/399,870.90 = 207,337.20/x
  3. Step 3: Cross multiply
    266,969.40x = 399,870.90 × 207,337.20
  4. Step 4: Simplify right side
    266,969.40x = 82,908,112,767.48
  5. Step 5: Solve for x
    x = 82,908,112,767.48/266,969.40
  6. Step 6: Final answer
    x = 310,552.87

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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.