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Finding the Fourth Proportional to 348,040.80, 521,672.40 and 198,352.80

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Solution

The fourth proportional to 348,040.80, 521,672.40 and 198,352.80 is: 297,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,040.80 : 521,672.40 = 198,352.80 : x
  2. Step 2: Convert to fraction form
    348,040.80/521,672.40 = 198,352.80/x
  3. Step 3: Cross multiply
    348,040.80x = 521,672.40 × 198,352.80
  4. Step 4: Simplify right side
    348,040.80x = 103,475,181,222.72
  5. Step 5: Solve for x
    x = 103,475,181,222.72/348,040.80
  6. Step 6: Final answer
    x = 297,307.62

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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.