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Finding the Fourth Proportional to 640,049.95, 960,071.46 and 260,969.22

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Solution

The fourth proportional to 640,049.95, 960,071.46 and 260,969.22 is: 391,452.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,049.95 : 960,071.46 = 260,969.22 : x
  2. Step 2: Convert to fraction form
    640,049.95/960,071.46 = 260,969.22/x
  3. Step 3: Cross multiply
    640,049.95x = 960,071.46 × 260,969.22
  4. Step 4: Simplify right side
    640,049.95x = 250,549,095,260.10
  5. Step 5: Solve for x
    x = 250,549,095,260.10/640,049.95
  6. Step 6: Final answer
    x = 391,452.41

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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.