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Finding the Fourth Proportional to 385,979.82, 532,590.14 and 242,638.37

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Solution

The fourth proportional to 385,979.82, 532,590.14 and 242,638.37 is: 334,801.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,979.82 : 532,590.14 = 242,638.37 : x
  2. Step 2: Convert to fraction form
    385,979.82/532,590.14 = 242,638.37/x
  3. Step 3: Cross multiply
    385,979.82x = 532,590.14 × 242,638.37
  4. Step 4: Simplify right side
    385,979.82x = 129,226,803,447.67
  5. Step 5: Solve for x
    x = 129,226,803,447.67/385,979.82
  6. Step 6: Final answer
    x = 334,801.97

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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.