Home / 296,071.11-408,319.92-209,859.57

Finding the Fourth Proportional to 296,071.11, 408,319.92 and 209,859.57

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Solution

The fourth proportional to 296,071.11, 408,319.92 and 209,859.57 is: 289,423.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,071.11 : 408,319.92 = 209,859.57 : x
  2. Step 2: Convert to fraction form
    296,071.11/408,319.92 = 209,859.57/x
  3. Step 3: Cross multiply
    296,071.11x = 408,319.92 × 209,859.57
  4. Step 4: Simplify right side
    296,071.11x = 85,689,842,833.63
  5. Step 5: Solve for x
    x = 85,689,842,833.63/296,071.11
  6. Step 6: Final answer
    x = 289,423.18

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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.