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Finding the Fourth Proportional to 319,024.60, 478,601.70 and 108,683.80

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Solution

The fourth proportional to 319,024.60, 478,601.70 and 108,683.80 is: 163,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,024.60 : 478,601.70 = 108,683.80 : x
  2. Step 2: Convert to fraction form
    319,024.60/478,601.70 = 108,683.80/x
  3. Step 3: Cross multiply
    319,024.60x = 478,601.70 × 108,683.80
  4. Step 4: Simplify right side
    319,024.60x = 52,016,251,442.46
  5. Step 5: Solve for x
    x = 52,016,251,442.46/319,024.60
  6. Step 6: Final answer
    x = 163,047.78

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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.