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Finding the Fourth Proportional to 252,316.89, 378,410.87 and 74,782.37

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Solution

The fourth proportional to 252,316.89, 378,410.87 and 74,782.37 is: 112,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,316.89 : 378,410.87 = 74,782.37 : x
  2. Step 2: Convert to fraction form
    252,316.89/378,410.87 = 74,782.37/x
  3. Step 3: Cross multiply
    252,316.89x = 378,410.87 × 74,782.37
  4. Step 4: Simplify right side
    252,316.89x = 28,298,462,825.35
  5. Step 5: Solve for x
    x = 28,298,462,825.35/252,316.89
  6. Step 6: Final answer
    x = 112,154.45

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1.5x scale

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.