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Finding the Fourth Proportional to 220,458.47, 304,231.41 and 122,340.72

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Solution

The fourth proportional to 220,458.47, 304,231.41 and 122,340.72 is: 168,829.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,458.47 : 304,231.41 = 122,340.72 : x
  2. Step 2: Convert to fraction form
    220,458.47/304,231.41 = 122,340.72/x
  3. Step 3: Cross multiply
    220,458.47x = 304,231.41 × 122,340.72
  4. Step 4: Simplify right side
    220,458.47x = 37,219,889,746.02
  5. Step 5: Solve for x
    x = 37,219,889,746.02/220,458.47
  6. Step 6: Final answer
    x = 168,829.49

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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.