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Finding the Fourth Proportional to 319,000.60, 478,229.10 and 141,410.80

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Solution

The fourth proportional to 319,000.60, 478,229.10 and 141,410.80 is: 211,995.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,000.60 : 478,229.10 = 141,410.80 : x
  2. Step 2: Convert to fraction form
    319,000.60/478,229.10 = 141,410.80/x
  3. Step 3: Cross multiply
    319,000.60x = 478,229.10 × 141,410.80
  4. Step 4: Simplify right side
    319,000.60x = 67,626,759,614.28
  5. Step 5: Solve for x
    x = 67,626,759,614.28/319,000.60
  6. Step 6: Final answer
    x = 211,995.71

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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.