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Finding the Fourth Proportional to 266,821.20, 399,259.80 and 167,029.20

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Solution

The fourth proportional to 266,821.20, 399,259.80 and 167,029.20 is: 249,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,821.20 : 399,259.80 = 167,029.20 : x
  2. Step 2: Convert to fraction form
    266,821.20/399,259.80 = 167,029.20/x
  3. Step 3: Cross multiply
    266,821.20x = 399,259.80 × 167,029.20
  4. Step 4: Simplify right side
    266,821.20x = 66,688,044,986.16
  5. Step 5: Solve for x
    x = 66,688,044,986.16/266,821.20
  6. Step 6: Final answer
    x = 249,935.33

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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.