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Finding the Fourth Proportional to 343,951.20, 515,999.70 and 104,045.40

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Solution

The fourth proportional to 343,951.20, 515,999.70 and 104,045.40 is: 156,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,951.20 : 515,999.70 = 104,045.40 : x
  2. Step 2: Convert to fraction form
    343,951.20/515,999.70 = 104,045.40/x
  3. Step 3: Cross multiply
    343,951.20x = 515,999.70 × 104,045.40
  4. Step 4: Simplify right side
    343,951.20x = 53,687,395,186.38
  5. Step 5: Solve for x
    x = 53,687,395,186.38/343,951.20
  6. Step 6: Final answer
    x = 156,090.15

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1.5x scale

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.