Home / 320,302.12-442,012.08-193,047.88

Finding the Fourth Proportional to 320,302.12, 442,012.08 and 193,047.88

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Solution

The fourth proportional to 320,302.12, 442,012.08 and 193,047.88 is: 266,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,302.12 : 442,012.08 = 193,047.88 : x
  2. Step 2: Convert to fraction form
    320,302.12/442,012.08 = 193,047.88/x
  3. Step 3: Cross multiply
    320,302.12x = 442,012.08 × 193,047.88
  4. Step 4: Simplify right side
    320,302.12x = 85,329,494,978.39
  5. Step 5: Solve for x
    x = 85,329,494,978.39/320,302.12
  6. Step 6: Final answer
    x = 266,403.15

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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.