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Finding the Fourth Proportional to 351,614.32, 485,108.40 and 198,630.16

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Solution

The fourth proportional to 351,614.32, 485,108.40 and 198,630.16 is: 274,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,614.32 : 485,108.40 = 198,630.16 : x
  2. Step 2: Convert to fraction form
    351,614.32/485,108.40 = 198,630.16/x
  3. Step 3: Cross multiply
    351,614.32x = 485,108.40 × 198,630.16
  4. Step 4: Simplify right side
    351,614.32x = 96,357,159,109.34
  5. Step 5: Solve for x
    x = 96,357,159,109.34/351,614.32
  6. Step 6: Final answer
    x = 274,042.19

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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.