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Finding the Fourth Proportional to 348,016.80, 520,858.80 and 243,040.80

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Solution

The fourth proportional to 348,016.80, 520,858.80 and 243,040.80 is: 363,746.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,016.80 : 520,858.80 = 243,040.80 : x
  2. Step 2: Convert to fraction form
    348,016.80/520,858.80 = 243,040.80/x
  3. Step 3: Cross multiply
    348,016.80x = 520,858.80 × 243,040.80
  4. Step 4: Simplify right side
    348,016.80x = 126,589,939,439.04
  5. Step 5: Solve for x
    x = 126,589,939,439.04/348,016.80
  6. Step 6: Final answer
    x = 363,746.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.