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Finding the Fourth Proportional to 368,389.54, 508,191.48 and 215,327.74

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Solution

The fourth proportional to 368,389.54, 508,191.48 and 215,327.74 is: 297,043.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,389.54 : 508,191.48 = 215,327.74 : x
  2. Step 2: Convert to fraction form
    368,389.54/508,191.48 = 215,327.74/x
  3. Step 3: Cross multiply
    368,389.54x = 508,191.48 × 215,327.74
  4. Step 4: Simplify right side
    368,389.54x = 109,427,722,875.66
  5. Step 5: Solve for x
    x = 109,427,722,875.66/368,389.54
  6. Step 6: Final answer
    x = 297,043.51

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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.