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Finding the Fourth Proportional to 228,870.64, 315,923.22 and 156,221.53

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Solution

The fourth proportional to 228,870.64, 315,923.22 and 156,221.53 is: 215,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,870.64 : 315,923.22 = 156,221.53 : x
  2. Step 2: Convert to fraction form
    228,870.64/315,923.22 = 156,221.53/x
  3. Step 3: Cross multiply
    228,870.64x = 315,923.22 × 156,221.53
  4. Step 4: Simplify right side
    228,870.64x = 49,354,008,790.93
  5. Step 5: Solve for x
    x = 49,354,008,790.93/228,870.64
  6. Step 6: Final answer
    x = 215,641.50

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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.