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Finding the Fourth Proportional to 312,527.34, 431,288.01 and 169,287.75

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Solution

The fourth proportional to 312,527.34, 431,288.01 and 169,287.75 is: 233,617.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,527.34 : 431,288.01 = 169,287.75 : x
  2. Step 2: Convert to fraction form
    312,527.34/431,288.01 = 169,287.75/x
  3. Step 3: Cross multiply
    312,527.34x = 431,288.01 × 169,287.75
  4. Step 4: Simplify right side
    312,527.34x = 73,011,776,814.88
  5. Step 5: Solve for x
    x = 73,011,776,814.88/312,527.34
  6. Step 6: Final answer
    x = 233,617.25

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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.