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Finding the Fourth Proportional to 312,607.08, 431,397.18 and 169,371

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Solution

The fourth proportional to 312,607.08, 431,397.18 and 169,371 is: 233,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,607.08 : 431,397.18 = 169,371 : x
  2. Step 2: Convert to fraction form
    312,607.08/431,397.18 = 169,371/x
  3. Step 3: Cross multiply
    312,607.08x = 431,397.18 × 169,371
  4. Step 4: Simplify right side
    312,607.08x = 73,066,171,773.78
  5. Step 5: Solve for x
    x = 73,066,171,773.78/312,607.08
  6. Step 6: Final answer
    x = 233,731.66

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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.