Home / 320,424.10-479,980.05-162,741.40

Finding the Fourth Proportional to 320,424.10, 479,980.05 and 162,741.40

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Solution

The fourth proportional to 320,424.10, 479,980.05 and 162,741.40 is: 243,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,424.10 : 479,980.05 = 162,741.40 : x
  2. Step 2: Convert to fraction form
    320,424.10/479,980.05 = 162,741.40/x
  3. Step 3: Cross multiply
    320,424.10x = 479,980.05 × 162,741.40
  4. Step 4: Simplify right side
    320,424.10x = 78,112,625,309.07
  5. Step 5: Solve for x
    x = 78,112,625,309.07/320,424.10
  6. Step 6: Final answer
    x = 243,778.87

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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.