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Finding the Fourth Proportional to 640,274.22, 960,280.11 and 235,326.87

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Solution

The fourth proportional to 640,274.22, 960,280.11 and 235,326.87 is: 352,942.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,274.22 : 960,280.11 = 235,326.87 : x
  2. Step 2: Convert to fraction form
    640,274.22/960,280.11 = 235,326.87/x
  3. Step 3: Cross multiply
    640,274.22x = 960,280.11 × 235,326.87
  4. Step 4: Simplify right side
    640,274.22x = 225,979,712,609.56
  5. Step 5: Solve for x
    x = 225,979,712,609.56/640,274.22
  6. Step 6: Final answer
    x = 352,942.08

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1.5x scale

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.