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Finding the Fourth Proportional to 443,603, 665,595.18 and 144,175.40

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Solution

The fourth proportional to 443,603, 665,595.18 and 144,175.40 is: 216,325.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,603 : 665,595.18 = 144,175.40 : x
  2. Step 2: Convert to fraction form
    443,603/665,595.18 = 144,175.40/x
  3. Step 3: Cross multiply
    443,603x = 665,595.18 × 144,175.40
  4. Step 4: Simplify right side
    443,603x = 95,962,451,314.57
  5. Step 5: Solve for x
    x = 95,962,451,314.57/443,603
  6. Step 6: Final answer
    x = 216,325.07

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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.