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Finding the Fourth Proportional to 266,094.80, 398,681.40 and 172,552.40

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Solution

The fourth proportional to 266,094.80, 398,681.40 and 172,552.40 is: 258,529.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,094.80 : 398,681.40 = 172,552.40 : x
  2. Step 2: Convert to fraction form
    266,094.80/398,681.40 = 172,552.40/x
  3. Step 3: Cross multiply
    266,094.80x = 398,681.40 × 172,552.40
  4. Step 4: Simplify right side
    266,094.80x = 68,793,432,405.36
  5. Step 5: Solve for x
    x = 68,793,432,405.36/266,094.80
  6. Step 6: Final answer
    x = 258,529.79

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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.