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Finding the Fourth Proportional to 230,984.35, 318,737.66 and 128,995.66

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Solution

The fourth proportional to 230,984.35, 318,737.66 and 128,995.66 is: 178,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,984.35 : 318,737.66 = 128,995.66 : x
  2. Step 2: Convert to fraction form
    230,984.35/318,737.66 = 128,995.66/x
  3. Step 3: Cross multiply
    230,984.35x = 318,737.66 × 128,995.66
  4. Step 4: Simplify right side
    230,984.35x = 41,115,773,224.87
  5. Step 5: Solve for x
    x = 41,115,773,224.87/230,984.35
  6. Step 6: Final answer
    x = 178,002.42

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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.