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Finding the Fourth Proportional to 347,357.40, 521,036.10 and 125,712.60

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Solution

The fourth proportional to 347,357.40, 521,036.10 and 125,712.60 is: 188,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,357.40 : 521,036.10 = 125,712.60 : x
  2. Step 2: Convert to fraction form
    347,357.40/521,036.10 = 125,712.60/x
  3. Step 3: Cross multiply
    347,357.40x = 521,036.10 × 125,712.60
  4. Step 4: Simplify right side
    347,357.40x = 65,500,802,824.86
  5. Step 5: Solve for x
    x = 65,500,802,824.86/347,357.40
  6. Step 6: Final answer
    x = 188,568.90

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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.