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Finding the Fourth Proportional to 421,559.12, 581,751.96 and 237,800

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Solution

The fourth proportional to 421,559.12, 581,751.96 and 237,800 is: 328,164.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,559.12 : 581,751.96 = 237,800 : x
  2. Step 2: Convert to fraction form
    421,559.12/581,751.96 = 237,800/x
  3. Step 3: Cross multiply
    421,559.12x = 581,751.96 × 237,800
  4. Step 4: Simplify right side
    421,559.12x = 138,340,616,088
  5. Step 5: Solve for x
    x = 138,340,616,088/421,559.12
  6. Step 6: Final answer
    x = 328,164.21

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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.