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Finding the Fourth Proportional to 319,148.60, 478,722.90 and 94,543.70

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Solution

The fourth proportional to 319,148.60, 478,722.90 and 94,543.70 is: 141,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,148.60 : 478,722.90 = 94,543.70 : x
  2. Step 2: Convert to fraction form
    319,148.60/478,722.90 = 94,543.70/x
  3. Step 3: Cross multiply
    319,148.60x = 478,722.90 × 94,543.70
  4. Step 4: Simplify right side
    319,148.60x = 45,260,234,240.73
  5. Step 5: Solve for x
    x = 45,260,234,240.73/319,148.60
  6. Step 6: Final answer
    x = 141,815.55

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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.