Home / 318,971.01-439,666.91-215,572.86

Finding the Fourth Proportional to 318,971.01, 439,666.91 and 215,572.86

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Solution

The fourth proportional to 318,971.01, 439,666.91 and 215,572.86 is: 297,143.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,971.01 : 439,666.91 = 215,572.86 : x
  2. Step 2: Convert to fraction form
    318,971.01/439,666.91 = 215,572.86/x
  3. Step 3: Cross multiply
    318,971.01x = 439,666.91 × 215,572.86
  4. Step 4: Simplify right side
    318,971.01x = 94,780,252,158.20
  5. Step 5: Solve for x
    x = 94,780,252,158.20/318,971.01
  6. Step 6: Final answer
    x = 297,143.78

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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.