Home / 430,327.20-645,490.80-149,647.20

Finding the Fourth Proportional to 430,327.20, 645,490.80 and 149,647.20

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Solution

The fourth proportional to 430,327.20, 645,490.80 and 149,647.20 is: 224,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,327.20 : 645,490.80 = 149,647.20 : x
  2. Step 2: Convert to fraction form
    430,327.20/645,490.80 = 149,647.20/x
  3. Step 3: Cross multiply
    430,327.20x = 645,490.80 × 149,647.20
  4. Step 4: Simplify right side
    430,327.20x = 96,595,890,845.76
  5. Step 5: Solve for x
    x = 96,595,890,845.76/430,327.20
  6. Step 6: Final answer
    x = 224,470.80

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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.