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Finding the Fourth Proportional to 319,876.56, 480,105.12 and 170,242.88

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Solution

The fourth proportional to 319,876.56, 480,105.12 and 170,242.88 is: 255,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,876.56 : 480,105.12 = 170,242.88 : x
  2. Step 2: Convert to fraction form
    319,876.56/480,105.12 = 170,242.88/x
  3. Step 3: Cross multiply
    319,876.56x = 480,105.12 × 170,242.88
  4. Step 4: Simplify right side
    319,876.56x = 81,734,478,331.55
  5. Step 5: Solve for x
    x = 81,734,478,331.55/319,876.56
  6. Step 6: Final answer
    x = 255,518.81

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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.