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Finding the Fourth Proportional to 275,331.45, 412,460.52 and 155,020.65

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Solution

The fourth proportional to 275,331.45, 412,460.52 and 155,020.65 is: 232,228.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,331.45 : 412,460.52 = 155,020.65 : x
  2. Step 2: Convert to fraction form
    275,331.45/412,460.52 = 155,020.65/x
  3. Step 3: Cross multiply
    275,331.45x = 412,460.52 × 155,020.65
  4. Step 4: Simplify right side
    275,331.45x = 63,939,897,909.74
  5. Step 5: Solve for x
    x = 63,939,897,909.74/275,331.45
  6. Step 6: Final answer
    x = 232,228.82

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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.