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Finding the Fourth Proportional to 640,050.95, 960,072.96 and 260,970.22

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Solution

The fourth proportional to 640,050.95, 960,072.96 and 260,970.22 is: 391,453.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,050.95 : 960,072.96 = 260,970.22 : x
  2. Step 2: Convert to fraction form
    640,050.95/960,072.96 = 260,970.22/x
  3. Step 3: Cross multiply
    640,050.95x = 960,072.96 × 260,970.22
  4. Step 4: Simplify right side
    640,050.95x = 250,550,451,587.25
  5. Step 5: Solve for x
    x = 250,550,451,587.25/640,050.95
  6. Step 6: Final answer
    x = 391,453.92

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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.