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Finding the Fourth Proportional to 288,750.81, 398,478.63 and 159,682.58

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Solution

The fourth proportional to 288,750.81, 398,478.63 and 159,682.58 is: 220,363.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,750.81 : 398,478.63 = 159,682.58 : x
  2. Step 2: Convert to fraction form
    288,750.81/398,478.63 = 159,682.58/x
  3. Step 3: Cross multiply
    288,750.81x = 398,478.63 × 159,682.58
  4. Step 4: Simplify right side
    288,750.81x = 63,630,093,720.87
  5. Step 5: Solve for x
    x = 63,630,093,720.87/288,750.81
  6. Step 6: Final answer
    x = 220,363.34

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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.