Home / 459,839.40-689,780.70-144,306.60

Finding the Fourth Proportional to 459,839.40, 689,780.70 and 144,306.60

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Solution

The fourth proportional to 459,839.40, 689,780.70 and 144,306.60 is: 216,466.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,839.40 : 689,780.70 = 144,306.60 : x
  2. Step 2: Convert to fraction form
    459,839.40/689,780.70 = 144,306.60/x
  3. Step 3: Cross multiply
    459,839.40x = 689,780.70 × 144,306.60
  4. Step 4: Simplify right side
    459,839.40x = 99,539,907,562.62
  5. Step 5: Solve for x
    x = 99,539,907,562.62/459,839.40
  6. Step 6: Final answer
    x = 216,466.68

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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.