Home / 380,115.18-570,175.20-99,630

Finding the Fourth Proportional to 380,115.18, 570,175.20 and 99,630

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Solution

The fourth proportional to 380,115.18, 570,175.20 and 99,630 is: 149,445.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,115.18 : 570,175.20 = 99,630 : x
  2. Step 2: Convert to fraction form
    380,115.18/570,175.20 = 99,630/x
  3. Step 3: Cross multiply
    380,115.18x = 570,175.20 × 99,630
  4. Step 4: Simplify right side
    380,115.18x = 56,806,555,176.00
  5. Step 5: Solve for x
    x = 56,806,555,176.00/380,115.18
  6. Step 6: Final answer
    x = 149,445.64

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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.