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Finding the Fourth Proportional to 266,747.80, 399,992.10 and 148,293.40

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Solution

The fourth proportional to 266,747.80, 399,992.10 and 148,293.40 is: 222,368.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,747.80 : 399,992.10 = 148,293.40 : x
  2. Step 2: Convert to fraction form
    266,747.80/399,992.10 = 148,293.40/x
  3. Step 3: Cross multiply
    266,747.80x = 399,992.10 × 148,293.40
  4. Step 4: Simplify right side
    266,747.80x = 59,316,188,482.14
  5. Step 5: Solve for x
    x = 59,316,188,482.14/266,747.80
  6. Step 6: Final answer
    x = 222,368.05

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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.