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Finding the Fourth Proportional to 266,923.20, 400,384.80 and 172,444.80

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Solution

The fourth proportional to 266,923.20, 400,384.80 and 172,444.80 is: 258,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,923.20 : 400,384.80 = 172,444.80 : x
  2. Step 2: Convert to fraction form
    266,923.20/400,384.80 = 172,444.80/x
  3. Step 3: Cross multiply
    266,923.20x = 400,384.80 × 172,444.80
  4. Step 4: Simplify right side
    266,923.20x = 69,044,276,759.04
  5. Step 5: Solve for x
    x = 69,044,276,759.04/266,923.20
  6. Step 6: Final answer
    x = 258,667.20

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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.