Home / 343,883.20-515,897.70-103,977.40

Finding the Fourth Proportional to 343,883.20, 515,897.70 and 103,977.40

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Solution

The fourth proportional to 343,883.20, 515,897.70 and 103,977.40 is: 155,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,883.20 : 515,897.70 = 103,977.40 : x
  2. Step 2: Convert to fraction form
    343,883.20/515,897.70 = 103,977.40/x
  3. Step 3: Cross multiply
    343,883.20x = 515,897.70 × 103,977.40
  4. Step 4: Simplify right side
    343,883.20x = 53,641,701,511.98
  5. Step 5: Solve for x
    x = 53,641,701,511.98/343,883.20
  6. Step 6: Final answer
    x = 155,988.14

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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.