Home / 391,552.02-540,331.29-221,840.82

Finding the Fourth Proportional to 391,552.02, 540,331.29 and 221,840.82

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Solution

The fourth proportional to 391,552.02, 540,331.29 and 221,840.82 is: 306,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,552.02 : 540,331.29 = 221,840.82 : x
  2. Step 2: Convert to fraction form
    391,552.02/540,331.29 = 221,840.82/x
  3. Step 3: Cross multiply
    391,552.02x = 540,331.29 × 221,840.82
  4. Step 4: Simplify right side
    391,552.02x = 119,867,536,445.26
  5. Step 5: Solve for x
    x = 119,867,536,445.26/391,552.02
  6. Step 6: Final answer
    x = 306,134.38

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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.