Home / 391,367.02-540,088.61-221,634.22

Finding the Fourth Proportional to 391,367.02, 540,088.61 and 221,634.22

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Solution

The fourth proportional to 391,367.02, 540,088.61 and 221,634.22 is: 305,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,367.02 : 540,088.61 = 221,634.22 : x
  2. Step 2: Convert to fraction form
    391,367.02/540,088.61 = 221,634.22/x
  3. Step 3: Cross multiply
    391,367.02x = 540,088.61 × 221,634.22
  4. Step 4: Simplify right side
    391,367.02x = 119,702,117,808.23
  5. Step 5: Solve for x
    x = 119,702,117,808.23/391,367.02
  6. Step 6: Final answer
    x = 305,856.43

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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.