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Finding the Fourth Proportional to 345,448.84, 518,323.98 and 120,970.39

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Solution

The fourth proportional to 345,448.84, 518,323.98 and 120,970.39 is: 181,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,448.84 : 518,323.98 = 120,970.39 : x
  2. Step 2: Convert to fraction form
    345,448.84/518,323.98 = 120,970.39/x
  3. Step 3: Cross multiply
    345,448.84x = 518,323.98 × 120,970.39
  4. Step 4: Simplify right side
    345,448.84x = 62,701,854,006.95
  5. Step 5: Solve for x
    x = 62,701,854,006.95/345,448.84
  6. Step 6: Final answer
    x = 181,508.36

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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.