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Finding the Fourth Proportional to 343,907.70, 515,934.45 and 104,001.90

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Solution

The fourth proportional to 343,907.70, 515,934.45 and 104,001.90 is: 156,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,907.70 : 515,934.45 = 104,001.90 : x
  2. Step 2: Convert to fraction form
    343,907.70/515,934.45 = 104,001.90/x
  3. Step 3: Cross multiply
    343,907.70x = 515,934.45 × 104,001.90
  4. Step 4: Simplify right side
    343,907.70x = 53,658,163,075.46
  5. Step 5: Solve for x
    x = 53,658,163,075.46/343,907.70
  6. Step 6: Final answer
    x = 156,024.90

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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.