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Finding the Fourth Proportional to 229,577.49, 316,768.32 and 138,915.81

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Solution

The fourth proportional to 229,577.49, 316,768.32 and 138,915.81 is: 191,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,577.49 : 316,768.32 = 138,915.81 : x
  2. Step 2: Convert to fraction form
    229,577.49/316,768.32 = 138,915.81/x
  3. Step 3: Cross multiply
    229,577.49x = 316,768.32 × 138,915.81
  4. Step 4: Simplify right side
    229,577.49x = 44,004,127,755.14
  5. Step 5: Solve for x
    x = 44,004,127,755.14/229,577.49
  6. Step 6: Final answer
    x = 191,674.40

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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.