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Finding the Fourth Proportional to 360,434.61, 540,651.92 and 135,845.45

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Solution

The fourth proportional to 360,434.61, 540,651.92 and 135,845.45 is: 203,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,434.61 : 540,651.92 = 135,845.45 : x
  2. Step 2: Convert to fraction form
    360,434.61/540,651.92 = 135,845.45/x
  3. Step 3: Cross multiply
    360,434.61x = 540,651.92 × 135,845.45
  4. Step 4: Simplify right side
    360,434.61x = 73,445,105,051.89
  5. Step 5: Solve for x
    x = 73,445,105,051.89/360,434.61
  6. Step 6: Final answer
    x = 203,768.18

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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.