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Finding the Fourth Proportional to 315,479.55, 472,464.92 and 181,955

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Solution

The fourth proportional to 315,479.55, 472,464.92 and 181,955 is: 272,497.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,479.55 : 472,464.92 = 181,955 : x
  2. Step 2: Convert to fraction form
    315,479.55/472,464.92 = 181,955/x
  3. Step 3: Cross multiply
    315,479.55x = 472,464.92 × 181,955
  4. Step 4: Simplify right side
    315,479.55x = 85,967,354,518.60
  5. Step 5: Solve for x
    x = 85,967,354,518.60/315,479.55
  6. Step 6: Final answer
    x = 272,497.39

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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.