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Finding the Fourth Proportional to 288,889.35, 398,675.75 and 158,074.86

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Solution

The fourth proportional to 288,889.35, 398,675.75 and 158,074.86 is: 218,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,889.35 : 398,675.75 = 158,074.86 : x
  2. Step 2: Convert to fraction form
    288,889.35/398,675.75 = 158,074.86/x
  3. Step 3: Cross multiply
    288,889.35x = 398,675.75 × 158,074.86
  4. Step 4: Simplify right side
    288,889.35x = 63,020,611,349.66
  5. Step 5: Solve for x
    x = 63,020,611,349.66/288,889.35
  6. Step 6: Final answer
    x = 218,147.92

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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.