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Finding the Fourth Proportional to 315,856.90, 435,882.58 and 179,903.51

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Solution

The fourth proportional to 315,856.90, 435,882.58 and 179,903.51 is: 248,266.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,856.90 : 435,882.58 = 179,903.51 : x
  2. Step 2: Convert to fraction form
    315,856.90/435,882.58 = 179,903.51/x
  3. Step 3: Cross multiply
    315,856.90x = 435,882.58 × 179,903.51
  4. Step 4: Simplify right side
    315,856.90x = 78,416,806,089.86
  5. Step 5: Solve for x
    x = 78,416,806,089.86/315,856.90
  6. Step 6: Final answer
    x = 248,266.88

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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.