Home / 432,048.15-648,072.23-290,330.55

Finding the Fourth Proportional to 432,048.15, 648,072.23 and 290,330.55

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Solution

The fourth proportional to 432,048.15, 648,072.23 and 290,330.55 is: 435,495.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,048.15 : 648,072.23 = 290,330.55 : x
  2. Step 2: Convert to fraction form
    432,048.15/648,072.23 = 290,330.55/x
  3. Step 3: Cross multiply
    432,048.15x = 648,072.23 × 290,330.55
  4. Step 4: Simplify right side
    432,048.15x = 188,155,165,523.97
  5. Step 5: Solve for x
    x = 188,155,165,523.97/432,048.15
  6. Step 6: Final answer
    x = 435,495.83

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Similar ratio
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1.5x scale

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.