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Finding the Fourth Proportional to 297,316.68, 446,043.15 and 128,865.30

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Solution

The fourth proportional to 297,316.68, 446,043.15 and 128,865.30 is: 193,327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,316.68 : 446,043.15 = 128,865.30 : x
  2. Step 2: Convert to fraction form
    297,316.68/446,043.15 = 128,865.30/x
  3. Step 3: Cross multiply
    297,316.68x = 446,043.15 × 128,865.30
  4. Step 4: Simplify right side
    297,316.68x = 57,479,484,337.70
  5. Step 5: Solve for x
    x = 57,479,484,337.70/297,316.68
  6. Step 6: Final answer
    x = 193,327.48

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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.