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Finding the Fourth Proportional to 530,940.71, 795,990.07 and 278,172.72

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Solution

The fourth proportional to 530,940.71, 795,990.07 and 278,172.72 is: 417,038.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,940.71 : 795,990.07 = 278,172.72 : x
  2. Step 2: Convert to fraction form
    530,940.71/795,990.07 = 278,172.72/x
  3. Step 3: Cross multiply
    530,940.71x = 795,990.07 × 278,172.72
  4. Step 4: Simplify right side
    530,940.71x = 221,422,722,864.89
  5. Step 5: Solve for x
    x = 221,422,722,864.89/530,940.71
  6. Step 6: Final answer
    x = 417,038.51

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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.