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Finding the Fourth Proportional to 225,615.15, 311,266.53 and 134,973.72

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Solution

The fourth proportional to 225,615.15, 311,266.53 and 134,973.72 is: 186,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,615.15 : 311,266.53 = 134,973.72 : x
  2. Step 2: Convert to fraction form
    225,615.15/311,266.53 = 134,973.72/x
  3. Step 3: Cross multiply
    225,615.15x = 311,266.53 × 134,973.72
  4. Step 4: Simplify right side
    225,615.15x = 42,012,801,465.59
  5. Step 5: Solve for x
    x = 42,012,801,465.59/225,615.15
  6. Step 6: Final answer
    x = 186,214.45

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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.