Home / 257,531.70-386,378.55-124,416.30

Finding the Fourth Proportional to 257,531.70, 386,378.55 and 124,416.30

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Solution

The fourth proportional to 257,531.70, 386,378.55 and 124,416.30 is: 186,663.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,531.70 : 386,378.55 = 124,416.30 : x
  2. Step 2: Convert to fraction form
    257,531.70/386,378.55 = 124,416.30/x
  3. Step 3: Cross multiply
    257,531.70x = 386,378.55 × 124,416.30
  4. Step 4: Simplify right side
    257,531.70x = 48,071,789,590.37
  5. Step 5: Solve for x
    x = 48,071,789,590.37/257,531.70
  6. Step 6: Final answer
    x = 186,663.58

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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.