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Finding the Fourth Proportional to 439,646.91, 606,713.81 and 238,442.91

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Solution

The fourth proportional to 439,646.91, 606,713.81 and 238,442.91 is: 329,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,646.91 : 606,713.81 = 238,442.91 : x
  2. Step 2: Convert to fraction form
    439,646.91/606,713.81 = 238,442.91/x
  3. Step 3: Cross multiply
    439,646.91x = 606,713.81 × 238,442.91
  4. Step 4: Simplify right side
    439,646.91x = 144,666,605,201.37
  5. Step 5: Solve for x
    x = 144,666,605,201.37/439,646.91
  6. Step 6: Final answer
    x = 329,051.80

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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.