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Finding the Fourth Proportional to 640,130.92, 960,196.70 and 166,815.08

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Solution

The fourth proportional to 640,130.92, 960,196.70 and 166,815.08 is: 250,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,130.92 : 960,196.70 = 166,815.08 : x
  2. Step 2: Convert to fraction form
    640,130.92/960,196.70 = 166,815.08/x
  3. Step 3: Cross multiply
    640,130.92x = 960,196.70 × 166,815.08
  4. Step 4: Simplify right side
    640,130.92x = 160,175,289,326.24
  5. Step 5: Solve for x
    x = 160,175,289,326.24/640,130.92
  6. Step 6: Final answer
    x = 250,222.70

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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.