Home / 319,013.60-478,585.20-108,672.80

Finding the Fourth Proportional to 319,013.60, 478,585.20 and 108,672.80

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Solution

The fourth proportional to 319,013.60, 478,585.20 and 108,672.80 is: 163,031.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,013.60 : 478,585.20 = 108,672.80 : x
  2. Step 2: Convert to fraction form
    319,013.60/478,585.20 = 108,672.80/x
  3. Step 3: Cross multiply
    319,013.60x = 478,585.20 × 108,672.80
  4. Step 4: Simplify right side
    319,013.60x = 52,009,193,722.56
  5. Step 5: Solve for x
    x = 52,009,193,722.56/319,013.60
  6. Step 6: Final answer
    x = 163,031.27

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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.