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Finding the Fourth Proportional to 392,712.18, 541,928.60 and 240,005.82

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Solution

The fourth proportional to 392,712.18, 541,928.60 and 240,005.82 is: 331,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,712.18 : 541,928.60 = 240,005.82 : x
  2. Step 2: Convert to fraction form
    392,712.18/541,928.60 = 240,005.82/x
  3. Step 3: Cross multiply
    392,712.18x = 541,928.60 × 240,005.82
  4. Step 4: Simplify right side
    392,712.18x = 130,066,018,024.45
  5. Step 5: Solve for x
    x = 130,066,018,024.45/392,712.18
  6. Step 6: Final answer
    x = 331,199.35

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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.