Home / 391,217.04-539,892.78-219,142.35

Finding the Fourth Proportional to 391,217.04, 539,892.78 and 219,142.35

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Solution

The fourth proportional to 391,217.04, 539,892.78 and 219,142.35 is: 302,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,217.04 : 539,892.78 = 219,142.35 : x
  2. Step 2: Convert to fraction form
    391,217.04/539,892.78 = 219,142.35/x
  3. Step 3: Cross multiply
    391,217.04x = 539,892.78 × 219,142.35
  4. Step 4: Simplify right side
    391,217.04x = 118,313,368,762.06
  5. Step 5: Solve for x
    x = 118,313,368,762.06/391,217.04
  6. Step 6: Final answer
    x = 302,423.87

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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.