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Finding the Fourth Proportional to 421,292.34, 581,241.47 and 239,875.97

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Solution

The fourth proportional to 421,292.34, 581,241.47 and 239,875.97 is: 330,948.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,292.34 : 581,241.47 = 239,875.97 : x
  2. Step 2: Convert to fraction form
    421,292.34/581,241.47 = 239,875.97/x
  3. Step 3: Cross multiply
    421,292.34x = 581,241.47 × 239,875.97
  4. Step 4: Simplify right side
    421,292.34x = 139,425,857,314.89
  5. Step 5: Solve for x
    x = 139,425,857,314.89/421,292.34
  6. Step 6: Final answer
    x = 330,948.00

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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.