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Finding the Fourth Proportional to 219,672.86, 303,155.72 and 121,557.23

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Solution

The fourth proportional to 219,672.86, 303,155.72 and 121,557.23 is: 167,752.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,672.86 : 303,155.72 = 121,557.23 : x
  2. Step 2: Convert to fraction form
    219,672.86/303,155.72 = 121,557.23/x
  3. Step 3: Cross multiply
    219,672.86x = 303,155.72 × 121,557.23
  4. Step 4: Simplify right side
    219,672.86x = 36,850,767,458.29
  5. Step 5: Solve for x
    x = 36,850,767,458.29/219,672.86
  6. Step 6: Final answer
    x = 167,752.94

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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.