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Finding the Fourth Proportional to 347,785.80, 521,678.70 and 170,201.40

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Solution

The fourth proportional to 347,785.80, 521,678.70 and 170,201.40 is: 255,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,785.80 : 521,678.70 = 170,201.40 : x
  2. Step 2: Convert to fraction form
    347,785.80/521,678.70 = 170,201.40/x
  3. Step 3: Cross multiply
    347,785.80x = 521,678.70 × 170,201.40
  4. Step 4: Simplify right side
    347,785.80x = 88,790,445,090.18
  5. Step 5: Solve for x
    x = 88,790,445,090.18/347,785.80
  6. Step 6: Final answer
    x = 255,302.10

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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.