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Finding the Fourth Proportional to 312,657.62, 431,469.01 and 169,417.93

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Solution

The fourth proportional to 312,657.62, 431,469.01 and 169,417.93 is: 233,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,657.62 : 431,469.01 = 169,417.93 : x
  2. Step 2: Convert to fraction form
    312,657.62/431,469.01 = 169,417.93/x
  3. Step 3: Cross multiply
    312,657.62x = 431,469.01 × 169,417.93
  4. Step 4: Simplify right side
    312,657.62x = 73,098,584,376.00
  5. Step 5: Solve for x
    x = 73,098,584,376.00/312,657.62
  6. Step 6: Final answer
    x = 233,797.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.