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Finding the Fourth Proportional to 288,747.71, 398,474.48 and 159,679.51

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Solution

The fourth proportional to 288,747.71, 398,474.48 and 159,679.51 is: 220,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,747.71 : 398,474.48 = 159,679.51 : x
  2. Step 2: Convert to fraction form
    288,747.71/398,474.48 = 159,679.51/x
  3. Step 3: Cross multiply
    288,747.71x = 398,474.48 × 159,679.51
  4. Step 4: Simplify right side
    288,747.71x = 63,628,210,012.40
  5. Step 5: Solve for x
    x = 63,628,210,012.40/288,747.71
  6. Step 6: Final answer
    x = 220,359.19

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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.