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Finding the Fourth Proportional to 312,581.16, 431,361.48 and 169,344.84

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Solution

The fourth proportional to 312,581.16, 431,361.48 and 169,344.84 is: 233,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,581.16 : 431,361.48 = 169,344.84 : x
  2. Step 2: Convert to fraction form
    312,581.16/431,361.48 = 169,344.84/x
  3. Step 3: Cross multiply
    312,581.16x = 431,361.48 × 169,344.84
  4. Step 4: Simplify right side
    312,581.16x = 73,048,840,812.76
  5. Step 5: Solve for x
    x = 73,048,840,812.76/312,581.16
  6. Step 6: Final answer
    x = 233,695.60

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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.