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Finding the Fourth Proportional to 647,659.50, 971,495.40 and 248,205.30

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Solution

The fourth proportional to 647,659.50, 971,495.40 and 248,205.30 is: 372,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,659.50 : 971,495.40 = 248,205.30 : x
  2. Step 2: Convert to fraction form
    647,659.50/971,495.40 = 248,205.30/x
  3. Step 3: Cross multiply
    647,659.50x = 971,495.40 × 248,205.30
  4. Step 4: Simplify right side
    647,659.50x = 241,130,307,205.62
  5. Step 5: Solve for x
    x = 241,130,307,205.62/647,659.50
  6. Step 6: Final answer
    x = 372,310.31

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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.