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Finding the Fourth Proportional to 288,748.65, 398,475.78 and 159,680.45

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Solution

The fourth proportional to 288,748.65, 398,475.78 and 159,680.45 is: 220,360.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,748.65 : 398,475.78 = 159,680.45 : x
  2. Step 2: Convert to fraction form
    288,748.65/398,475.78 = 159,680.45/x
  3. Step 3: Cross multiply
    288,748.65x = 398,475.78 × 159,680.45
  4. Step 4: Simplify right side
    288,748.65x = 63,628,791,864.50
  5. Step 5: Solve for x
    x = 63,628,791,864.50/288,748.65
  6. Step 6: Final answer
    x = 220,360.49

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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.