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Finding the Fourth Proportional to 288,756.06, 398,471.88 and 159,686.16

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Solution

The fourth proportional to 288,756.06, 398,471.88 and 159,686.16 is: 220,360.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,756.06 : 398,471.88 = 159,686.16 : x
  2. Step 2: Convert to fraction form
    288,756.06/398,471.88 = 159,686.16/x
  3. Step 3: Cross multiply
    288,756.06x = 398,471.88 × 159,686.16
  4. Step 4: Simplify right side
    288,756.06x = 63,630,444,385.18
  5. Step 5: Solve for x
    x = 63,630,444,385.18/288,756.06
  6. Step 6: Final answer
    x = 220,360.55

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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.