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Finding the Fourth Proportional to 399,484.70, 599,228.62 and 99,964.42

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Solution

The fourth proportional to 399,484.70, 599,228.62 and 99,964.42 is: 149,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,484.70 : 599,228.62 = 99,964.42 : x
  2. Step 2: Convert to fraction form
    399,484.70/599,228.62 = 99,964.42/x
  3. Step 3: Cross multiply
    399,484.70x = 599,228.62 × 99,964.42
  4. Step 4: Simplify right side
    399,484.70x = 59,901,541,445.70
  5. Step 5: Solve for x
    x = 59,901,541,445.70/399,484.70
  6. Step 6: Final answer
    x = 149,947.02

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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.