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Finding the Fourth Proportional to 223,155.54, 307,865.61 and 142,562.16

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Solution

The fourth proportional to 223,155.54, 307,865.61 and 142,562.16 is: 196,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,155.54 : 307,865.61 = 142,562.16 : x
  2. Step 2: Convert to fraction form
    223,155.54/307,865.61 = 142,562.16/x
  3. Step 3: Cross multiply
    223,155.54x = 307,865.61 × 142,562.16
  4. Step 4: Simplify right side
    223,155.54x = 43,889,986,351.32
  5. Step 5: Solve for x
    x = 43,889,986,351.32/223,155.54
  6. Step 6: Final answer
    x = 196,678.90

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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.