Home / 320,351.20-442,176.90-211,534.98

Finding the Fourth Proportional to 320,351.20, 442,176.90 and 211,534.98

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Solution

The fourth proportional to 320,351.20, 442,176.90 and 211,534.98 is: 291,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,351.20 : 442,176.90 = 211,534.98 : x
  2. Step 2: Convert to fraction form
    320,351.20/442,176.90 = 211,534.98/x
  3. Step 3: Cross multiply
    320,351.20x = 442,176.90 × 211,534.98
  4. Step 4: Simplify right side
    320,351.20x = 93,535,881,697.96
  5. Step 5: Solve for x
    x = 93,535,881,697.96/320,351.20
  6. Step 6: Final answer
    x = 291,979.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.