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Finding the Fourth Proportional to 647,374.19, 971,201.48 and 248,015

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Solution

The fourth proportional to 647,374.19, 971,201.48 and 248,015 is: 372,076.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,374.19 : 971,201.48 = 248,015 : x
  2. Step 2: Convert to fraction form
    647,374.19/971,201.48 = 248,015/x
  3. Step 3: Cross multiply
    647,374.19x = 971,201.48 × 248,015
  4. Step 4: Simplify right side
    647,374.19x = 240,872,535,062.20
  5. Step 5: Solve for x
    x = 240,872,535,062.20/647,374.19
  6. Step 6: Final answer
    x = 372,076.21

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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.