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Finding the Fourth Proportional to 421,732.56, 581,806.08 and 247,214.32

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Solution

The fourth proportional to 421,732.56, 581,806.08 and 247,214.32 is: 341,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,732.56 : 581,806.08 = 247,214.32 : x
  2. Step 2: Convert to fraction form
    421,732.56/581,806.08 = 247,214.32/x
  3. Step 3: Cross multiply
    421,732.56x = 581,806.08 × 247,214.32
  4. Step 4: Simplify right side
    421,732.56x = 143,830,794,439.07
  5. Step 5: Solve for x
    x = 143,830,794,439.07/421,732.56
  6. Step 6: Final answer
    x = 341,047.40

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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.