Home / 380,064.20-570,114.68-99,581.72

Finding the Fourth Proportional to 380,064.20, 570,114.68 and 99,581.72

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Solution

The fourth proportional to 380,064.20, 570,114.68 and 99,581.72 is: 149,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,064.20 : 570,114.68 = 99,581.72 : x
  2. Step 2: Convert to fraction form
    380,064.20/570,114.68 = 99,581.72/x
  3. Step 3: Cross multiply
    380,064.20x = 570,114.68 × 99,581.72
  4. Step 4: Simplify right side
    380,064.20x = 56,773,000,431.65
  5. Step 5: Solve for x
    x = 56,773,000,431.65/380,064.20
  6. Step 6: Final answer
    x = 149,377.40

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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.