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Finding the Fourth Proportional to 266,686.40, 400,904.40 and 188,343.20

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Solution

The fourth proportional to 266,686.40, 400,904.40 and 188,343.20 is: 283,132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,686.40 : 400,904.40 = 188,343.20 : x
  2. Step 2: Convert to fraction form
    266,686.40/400,904.40 = 188,343.20/x
  3. Step 3: Cross multiply
    266,686.40x = 400,904.40 × 188,343.20
  4. Step 4: Simplify right side
    266,686.40x = 75,507,617,590.08
  5. Step 5: Solve for x
    x = 75,507,617,590.08/266,686.40
  6. Step 6: Final answer
    x = 283,132.61

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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.