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Finding the Fourth Proportional to 640,224.30, 960,385.05 and 190,910.01

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Solution

The fourth proportional to 640,224.30, 960,385.05 and 190,910.01 is: 286,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,224.30 : 960,385.05 = 190,910.01 : x
  2. Step 2: Convert to fraction form
    640,224.30/960,385.05 = 190,910.01/x
  3. Step 3: Cross multiply
    640,224.30x = 960,385.05 × 190,910.01
  4. Step 4: Simplify right side
    640,224.30x = 183,347,119,499.35
  5. Step 5: Solve for x
    x = 183,347,119,499.35/640,224.30
  6. Step 6: Final answer
    x = 286,379.51

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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.