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Finding the Fourth Proportional to 391,712.24, 540,728.27 and 264,560.06

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Solution

The fourth proportional to 391,712.24, 540,728.27 and 264,560.06 is: 365,204.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,712.24 : 540,728.27 = 264,560.06 : x
  2. Step 2: Convert to fraction form
    391,712.24/540,728.27 = 264,560.06/x
  3. Step 3: Cross multiply
    391,712.24x = 540,728.27 × 264,560.06
  4. Step 4: Simplify right side
    391,712.24x = 143,055,102,232.10
  5. Step 5: Solve for x
    x = 143,055,102,232.10/391,712.24
  6. Step 6: Final answer
    x = 365,204.58

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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.