Home / 320,321.65-442,031.55-191,281.81

Finding the Fourth Proportional to 320,321.65, 442,031.55 and 191,281.81

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Solution

The fourth proportional to 320,321.65, 442,031.55 and 191,281.81 is: 263,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,321.65 : 442,031.55 = 191,281.81 : x
  2. Step 2: Convert to fraction form
    320,321.65/442,031.55 = 191,281.81/x
  3. Step 3: Cross multiply
    320,321.65x = 442,031.55 × 191,281.81
  4. Step 4: Simplify right side
    320,321.65x = 84,552,594,961.11
  5. Step 5: Solve for x
    x = 84,552,594,961.11/320,321.65
  6. Step 6: Final answer
    x = 263,961.54

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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.