Home / 318,397.23-439,086.60-203,712.17

Finding the Fourth Proportional to 318,397.23, 439,086.60 and 203,712.17

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Solution

The fourth proportional to 318,397.23, 439,086.60 and 203,712.17 is: 280,929.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,397.23 : 439,086.60 = 203,712.17 : x
  2. Step 2: Convert to fraction form
    318,397.23/439,086.60 = 203,712.17/x
  3. Step 3: Cross multiply
    318,397.23x = 439,086.60 × 203,712.17
  4. Step 4: Simplify right side
    318,397.23x = 89,447,281,908.49
  5. Step 5: Solve for x
    x = 89,447,281,908.49/318,397.23
  6. Step 6: Final answer
    x = 280,929.84

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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.