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Finding the Fourth Proportional to 369,990.30, 554,760.72 and 145,081.26

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Solution

The fourth proportional to 369,990.30, 554,760.72 and 145,081.26 is: 217,533.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,990.30 : 554,760.72 = 145,081.26 : x
  2. Step 2: Convert to fraction form
    369,990.30/554,760.72 = 145,081.26/x
  3. Step 3: Cross multiply
    369,990.30x = 554,760.72 × 145,081.26
  4. Step 4: Simplify right side
    369,990.30x = 80,485,384,256.11
  5. Step 5: Solve for x
    x = 80,485,384,256.11/369,990.30
  6. Step 6: Final answer
    x = 217,533.77

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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.