Home / 312,782.32-431,628.04-169,539.29

Finding the Fourth Proportional to 312,782.32, 431,628.04 and 169,539.29

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Solution

The fourth proportional to 312,782.32, 431,628.04 and 169,539.29 is: 233,957.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,782.32 : 431,628.04 = 169,539.29 : x
  2. Step 2: Convert to fraction form
    312,782.32/431,628.04 = 169,539.29/x
  3. Step 3: Cross multiply
    312,782.32x = 431,628.04 × 169,539.29
  4. Step 4: Simplify right side
    312,782.32x = 73,177,911,445.69
  5. Step 5: Solve for x
    x = 73,177,911,445.69/312,782.32
  6. Step 6: Final answer
    x = 233,957.95

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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.