Home / 412,208.10-618,312.66-112,691.28

Finding the Fourth Proportional to 412,208.10, 618,312.66 and 112,691.28

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Solution

The fourth proportional to 412,208.10, 618,312.66 and 112,691.28 is: 169,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,208.10 : 618,312.66 = 112,691.28 : x
  2. Step 2: Convert to fraction form
    412,208.10/618,312.66 = 112,691.28/x
  3. Step 3: Cross multiply
    412,208.10x = 618,312.66 × 112,691.28
  4. Step 4: Simplify right side
    412,208.10x = 69,678,445,095.60
  5. Step 5: Solve for x
    x = 69,678,445,095.60/412,208.10
  6. Step 6: Final answer
    x = 169,037.06

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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.