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Finding the Fourth Proportional to 421,141.71, 581,175.62 and 239,870.52

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Solution

The fourth proportional to 421,141.71, 581,175.62 and 239,870.52 is: 331,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,141.71 : 581,175.62 = 239,870.52 : x
  2. Step 2: Convert to fraction form
    421,141.71/581,175.62 = 239,870.52/x
  3. Step 3: Cross multiply
    421,141.71x = 581,175.62 × 239,870.52
  4. Step 4: Simplify right side
    421,141.71x = 139,406,895,274.84
  5. Step 5: Solve for x
    x = 139,406,895,274.84/421,141.71
  6. Step 6: Final answer
    x = 331,021.35

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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.