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Finding the Fourth Proportional to 640,734.40, 961,028.70 and 167,467.60

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Solution

The fourth proportional to 640,734.40, 961,028.70 and 167,467.60 is: 251,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,734.40 : 961,028.70 = 167,467.60 : x
  2. Step 2: Convert to fraction form
    640,734.40/961,028.70 = 167,467.60/x
  3. Step 3: Cross multiply
    640,734.40x = 961,028.70 × 167,467.60
  4. Step 4: Simplify right side
    640,734.40x = 160,941,169,920.12
  5. Step 5: Solve for x
    x = 160,941,169,920.12/640,734.40
  6. Step 6: Final answer
    x = 251,182.35

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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.