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Finding the Fourth Proportional to 443,539.95, 665,145.90 and 144,030.30

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Solution

The fourth proportional to 443,539.95, 665,145.90 and 144,030.30 is: 215,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,539.95 : 665,145.90 = 144,030.30 : x
  2. Step 2: Convert to fraction form
    443,539.95/665,145.90 = 144,030.30/x
  3. Step 3: Cross multiply
    443,539.95x = 665,145.90 × 144,030.30
  4. Step 4: Simplify right side
    443,539.95x = 95,801,163,520.77
  5. Step 5: Solve for x
    x = 95,801,163,520.77/443,539.95
  6. Step 6: Final answer
    x = 215,992.19

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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.