Home / 379,185.06-523,275.20-209,417.70

Finding the Fourth Proportional to 379,185.06, 523,275.20 and 209,417.70

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Solution

The fourth proportional to 379,185.06, 523,275.20 and 209,417.70 is: 288,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,185.06 : 523,275.20 = 209,417.70 : x
  2. Step 2: Convert to fraction form
    379,185.06/523,275.20 = 209,417.70/x
  3. Step 3: Cross multiply
    379,185.06x = 523,275.20 × 209,417.70
  4. Step 4: Simplify right side
    379,185.06x = 109,583,088,851.04
  5. Step 5: Solve for x
    x = 109,583,088,851.04/379,185.06
  6. Step 6: Final answer
    x = 288,996.33

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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.