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Finding the Fourth Proportional to 292,653.16, 438,979.90 and 82,291.10

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Solution

The fourth proportional to 292,653.16, 438,979.90 and 82,291.10 is: 123,436.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,653.16 : 438,979.90 = 82,291.10 : x
  2. Step 2: Convert to fraction form
    292,653.16/438,979.90 = 82,291.10/x
  3. Step 3: Cross multiply
    292,653.16x = 438,979.90 × 82,291.10
  4. Step 4: Simplify right side
    292,653.16x = 36,124,138,848.89
  5. Step 5: Solve for x
    x = 36,124,138,848.89/292,653.16
  6. Step 6: Final answer
    x = 123,436.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.