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Finding the Fourth Proportional to 356,304.16, 534,455.16 and 145,942.12

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Solution

The fourth proportional to 356,304.16, 534,455.16 and 145,942.12 is: 218,912.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,304.16 : 534,455.16 = 145,942.12 : x
  2. Step 2: Convert to fraction form
    356,304.16/534,455.16 = 145,942.12/x
  3. Step 3: Cross multiply
    356,304.16x = 534,455.16 × 145,942.12
  4. Step 4: Simplify right side
    356,304.16x = 77,999,519,095.34
  5. Step 5: Solve for x
    x = 77,999,519,095.34/356,304.16
  6. Step 6: Final answer
    x = 218,912.74

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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.