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Finding the Fourth Proportional to 368,368.80, 552,682.80 and 131,719.20

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Solution

The fourth proportional to 368,368.80, 552,682.80 and 131,719.20 is: 197,625.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,368.80 : 552,682.80 = 131,719.20 : x
  2. Step 2: Convert to fraction form
    368,368.80/552,682.80 = 131,719.20/x
  3. Step 3: Cross multiply
    368,368.80x = 552,682.80 × 131,719.20
  4. Step 4: Simplify right side
    368,368.80x = 72,798,936,269.76
  5. Step 5: Solve for x
    x = 72,798,936,269.76/368,368.80
  6. Step 6: Final answer
    x = 197,625.14

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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.