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Finding the Fourth Proportional to 229,433.08, 316,639.08 and 138,811.36

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Solution

The fourth proportional to 229,433.08, 316,639.08 and 138,811.36 is: 191,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,433.08 : 316,639.08 = 138,811.36 : x
  2. Step 2: Convert to fraction form
    229,433.08/316,639.08 = 138,811.36/x
  3. Step 3: Cross multiply
    229,433.08x = 316,639.08 × 138,811.36
  4. Step 4: Simplify right side
    229,433.08x = 43,953,101,323.95
  5. Step 5: Solve for x
    x = 43,953,101,323.95/229,433.08
  6. Step 6: Final answer
    x = 191,572.64

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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.