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Finding the Fourth Proportional to 381,247.63, 571,875.54 and 115,010.45

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Solution

The fourth proportional to 381,247.63, 571,875.54 and 115,010.45 is: 172,516.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,247.63 : 571,875.54 = 115,010.45 : x
  2. Step 2: Convert to fraction form
    381,247.63/571,875.54 = 115,010.45/x
  3. Step 3: Cross multiply
    381,247.63x = 571,875.54 × 115,010.45
  4. Step 4: Simplify right side
    381,247.63x = 65,771,662,700.19
  5. Step 5: Solve for x
    x = 65,771,662,700.19/381,247.63
  6. Step 6: Final answer
    x = 172,516.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.