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Finding the Fourth Proportional to 312,684.56, 431,505.28 and 169,444.70

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Solution

The fourth proportional to 312,684.56, 431,505.28 and 169,444.70 is: 233,834.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,684.56 : 431,505.28 = 169,444.70 : x
  2. Step 2: Convert to fraction form
    312,684.56/431,505.28 = 169,444.70/x
  3. Step 3: Cross multiply
    312,684.56x = 431,505.28 × 169,444.70
  4. Step 4: Simplify right side
    312,684.56x = 73,116,282,718.02
  5. Step 5: Solve for x
    x = 73,116,282,718.02/312,684.56
  6. Step 6: Final answer
    x = 233,834.00

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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.