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Finding the Fourth Proportional to 647,582.40, 970,912.80 and 248,068.80

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Solution

The fourth proportional to 647,582.40, 970,912.80 and 248,068.80 is: 371,926.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,582.40 : 970,912.80 = 248,068.80 : x
  2. Step 2: Convert to fraction form
    647,582.40/970,912.80 = 248,068.80/x
  3. Step 3: Cross multiply
    647,582.40x = 970,912.80 × 248,068.80
  4. Step 4: Simplify right side
    647,582.40x = 240,853,173,200.64
  5. Step 5: Solve for x
    x = 240,853,173,200.64/647,582.40
  6. Step 6: Final answer
    x = 371,926.68

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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.