Home / 402,495.10-603,742.65-215,871.10

Finding the Fourth Proportional to 402,495.10, 603,742.65 and 215,871.10

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Solution

The fourth proportional to 402,495.10, 603,742.65 and 215,871.10 is: 323,806.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,495.10 : 603,742.65 = 215,871.10 : x
  2. Step 2: Convert to fraction form
    402,495.10/603,742.65 = 215,871.10/x
  3. Step 3: Cross multiply
    402,495.10x = 603,742.65 × 215,871.10
  4. Step 4: Simplify right side
    402,495.10x = 130,330,589,972.42
  5. Step 5: Solve for x
    x = 130,330,589,972.42/402,495.10
  6. Step 6: Final answer
    x = 323,806.65

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Similar ratio
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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.