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Finding the Fourth Proportional to 230,363.16, 317,927.02 and 128,397.94

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Solution

The fourth proportional to 230,363.16, 317,927.02 and 128,397.94 is: 177,203.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,363.16 : 317,927.02 = 128,397.94 : x
  2. Step 2: Convert to fraction form
    230,363.16/317,927.02 = 128,397.94/x
  3. Step 3: Cross multiply
    230,363.16x = 317,927.02 × 128,397.94
  4. Step 4: Simplify right side
    230,363.16x = 40,821,174,438.34
  5. Step 5: Solve for x
    x = 40,821,174,438.34/230,363.16
  6. Step 6: Final answer
    x = 177,203.57

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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.