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Finding the Fourth Proportional to 307,833.76, 424,817.20 and 170,012.32

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Solution

The fourth proportional to 307,833.76, 424,817.20 and 170,012.32 is: 234,620.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,833.76 : 424,817.20 = 170,012.32 : x
  2. Step 2: Convert to fraction form
    307,833.76/424,817.20 = 170,012.32/x
  3. Step 3: Cross multiply
    307,833.76x = 424,817.20 × 170,012.32
  4. Step 4: Simplify right side
    307,833.76x = 72,224,157,747.90
  5. Step 5: Solve for x
    x = 72,224,157,747.90/307,833.76
  6. Step 6: Final answer
    x = 234,620.65

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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.