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Finding the Fourth Proportional to 316,477.72, 475,044.63 and 212,026.60

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Solution

The fourth proportional to 316,477.72, 475,044.63 and 212,026.60 is: 318,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,477.72 : 475,044.63 = 212,026.60 : x
  2. Step 2: Convert to fraction form
    316,477.72/475,044.63 = 212,026.60/x
  3. Step 3: Cross multiply
    316,477.72x = 475,044.63 × 212,026.60
  4. Step 4: Simplify right side
    316,477.72x = 100,722,097,747.16
  5. Step 5: Solve for x
    x = 100,722,097,747.16/316,477.72
  6. Step 6: Final answer
    x = 318,259.68

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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.