Home / 287,440.34-431,141.60-107,490.74

Finding the Fourth Proportional to 287,440.34, 431,141.60 and 107,490.74

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Solution

The fourth proportional to 287,440.34, 431,141.60 and 107,490.74 is: 161,229.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,440.34 : 431,141.60 = 107,490.74 : x
  2. Step 2: Convert to fraction form
    287,440.34/431,141.60 = 107,490.74/x
  3. Step 3: Cross multiply
    287,440.34x = 431,141.60 × 107,490.74
  4. Step 4: Simplify right side
    287,440.34x = 46,343,729,628.78
  5. Step 5: Solve for x
    x = 46,343,729,628.78/287,440.34
  6. Step 6: Final answer
    x = 161,229.04

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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.