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Finding the Fourth Proportional to 229,646.56, 316,919.28 and 139,019.08

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Solution

The fourth proportional to 229,646.56, 316,919.28 and 139,019.08 is: 191,850.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,646.56 : 316,919.28 = 139,019.08 : x
  2. Step 2: Convert to fraction form
    229,646.56/316,919.28 = 139,019.08/x
  3. Step 3: Cross multiply
    229,646.56x = 316,919.28 × 139,019.08
  4. Step 4: Simplify right side
    229,646.56x = 44,057,826,739.86
  5. Step 5: Solve for x
    x = 44,057,826,739.86/229,646.56
  6. Step 6: Final answer
    x = 191,850.58

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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.