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Finding the Fourth Proportional to 421,064.52, 581,068.44 and 239,776.48

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Solution

The fourth proportional to 421,064.52, 581,068.44 and 239,776.48 is: 330,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,064.52 : 581,068.44 = 239,776.48 : x
  2. Step 2: Convert to fraction form
    421,064.52/581,068.44 = 239,776.48/x
  3. Step 3: Cross multiply
    421,064.52x = 581,068.44 × 239,776.48
  4. Step 4: Simplify right side
    421,064.52x = 139,326,545,182.29
  5. Step 5: Solve for x
    x = 139,326,545,182.29/421,064.52
  6. Step 6: Final answer
    x = 330,891.20

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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.