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Finding the Fourth Proportional to 640,310.13, 960,465.06 and 166,994.19

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Solution

The fourth proportional to 640,310.13, 960,465.06 and 166,994.19 is: 250,491.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,310.13 : 960,465.06 = 166,994.19 : x
  2. Step 2: Convert to fraction form
    640,310.13/960,465.06 = 166,994.19/x
  3. Step 3: Cross multiply
    640,310.13x = 960,465.06 × 166,994.19
  4. Step 4: Simplify right side
    640,310.13x = 160,392,084,718.00
  5. Step 5: Solve for x
    x = 160,392,084,718.00/640,310.13
  6. Step 6: Final answer
    x = 250,491.25

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Double scale
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Similar ratio
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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.