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Finding the Fourth Proportional to 398,468.70, 597,703.05 and 149,118.30

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Solution

The fourth proportional to 398,468.70, 597,703.05 and 149,118.30 is: 223,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,468.70 : 597,703.05 = 149,118.30 : x
  2. Step 2: Convert to fraction form
    398,468.70/597,703.05 = 149,118.30/x
  3. Step 3: Cross multiply
    398,468.70x = 597,703.05 × 149,118.30
  4. Step 4: Simplify right side
    398,468.70x = 89,128,462,720.82
  5. Step 5: Solve for x
    x = 89,128,462,720.82/398,468.70
  6. Step 6: Final answer
    x = 223,677.45

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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.