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Finding the Fourth Proportional to 647,658.90, 971,027.55 and 248,145.30

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Solution

The fourth proportional to 647,658.90, 971,027.55 and 248,145.30 is: 372,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,658.90 : 971,027.55 = 248,145.30 : x
  2. Step 2: Convert to fraction form
    647,658.90/971,027.55 = 248,145.30/x
  3. Step 3: Cross multiply
    647,658.90x = 971,027.55 × 248,145.30
  4. Step 4: Simplify right side
    647,658.90x = 240,955,922,703.02
  5. Step 5: Solve for x
    x = 240,955,922,703.02/647,658.90
  6. Step 6: Final answer
    x = 372,041.40

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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.