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Finding the Fourth Proportional to 342,032.72, 471,890.08 and 221,326.72

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Solution

The fourth proportional to 342,032.72, 471,890.08 and 221,326.72 is: 305,356.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,032.72 : 471,890.08 = 221,326.72 : x
  2. Step 2: Convert to fraction form
    342,032.72/471,890.08 = 221,326.72/x
  3. Step 3: Cross multiply
    342,032.72x = 471,890.08 × 221,326.72
  4. Step 4: Simplify right side
    342,032.72x = 104,441,883,606.94
  5. Step 5: Solve for x
    x = 104,441,883,606.94/342,032.72
  6. Step 6: Final answer
    x = 305,356.41

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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.