Home / 309,921.45-427,658.73-173,970.36

Finding the Fourth Proportional to 309,921.45, 427,658.73 and 173,970.36

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Solution

The fourth proportional to 309,921.45, 427,658.73 and 173,970.36 is: 240,060.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,921.45 : 427,658.73 = 173,970.36 : x
  2. Step 2: Convert to fraction form
    309,921.45/427,658.73 = 173,970.36/x
  3. Step 3: Cross multiply
    309,921.45x = 427,658.73 × 173,970.36
  4. Step 4: Simplify right side
    309,921.45x = 74,399,943,215.24
  5. Step 5: Solve for x
    x = 74,399,943,215.24/309,921.45
  6. Step 6: Final answer
    x = 240,060.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.