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Finding the Fourth Proportional to 314,145.88, 471,216.60 and 127,154.68

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Solution

The fourth proportional to 314,145.88, 471,216.60 and 127,154.68 is: 190,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,145.88 : 471,216.60 = 127,154.68 : x
  2. Step 2: Convert to fraction form
    314,145.88/471,216.60 = 127,154.68/x
  3. Step 3: Cross multiply
    314,145.88x = 471,216.60 × 127,154.68
  4. Step 4: Simplify right side
    314,145.88x = 59,917,395,983.69
  5. Step 5: Solve for x
    x = 59,917,395,983.69/314,145.88
  6. Step 6: Final answer
    x = 190,731.12

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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.