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Finding the Fourth Proportional to 288,970.34, 398,859.20 and 168,134.96

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Solution

The fourth proportional to 288,970.34, 398,859.20 and 168,134.96 is: 232,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,970.34 : 398,859.20 = 168,134.96 : x
  2. Step 2: Convert to fraction form
    288,970.34/398,859.20 = 168,134.96/x
  3. Step 3: Cross multiply
    288,970.34x = 398,859.20 × 168,134.96
  4. Step 4: Simplify right side
    288,970.34x = 67,062,175,637.63
  5. Step 5: Solve for x
    x = 67,062,175,637.63/288,970.34
  6. Step 6: Final answer
    x = 232,072.87

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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.