Home / 345,948.72-518,985.81-156,498.33

Finding the Fourth Proportional to 345,948.72, 518,985.81 and 156,498.33

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Solution

The fourth proportional to 345,948.72, 518,985.81 and 156,498.33 is: 234,775.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,948.72 : 518,985.81 = 156,498.33 : x
  2. Step 2: Convert to fraction form
    345,948.72/518,985.81 = 156,498.33/x
  3. Step 3: Cross multiply
    345,948.72x = 518,985.81 × 156,498.33
  4. Step 4: Simplify right side
    345,948.72x = 81,220,412,558.70
  5. Step 5: Solve for x
    x = 81,220,412,558.70/345,948.72
  6. Step 6: Final answer
    x = 234,775.87

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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.