Home / 439,817.20-659,639.40-144,329.20

Finding the Fourth Proportional to 439,817.20, 659,639.40 and 144,329.20

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Solution

The fourth proportional to 439,817.20, 659,639.40 and 144,329.20 is: 216,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,817.20 : 659,639.40 = 144,329.20 : x
  2. Step 2: Convert to fraction form
    439,817.20/659,639.40 = 144,329.20/x
  3. Step 3: Cross multiply
    439,817.20x = 659,639.40 × 144,329.20
  4. Step 4: Simplify right side
    439,817.20x = 95,205,226,890.48
  5. Step 5: Solve for x
    x = 95,205,226,890.48/439,817.20
  6. Step 6: Final answer
    x = 216,465.45

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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.