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Finding the Fourth Proportional to 640,202.24, 883,455.28 and 353,716.16

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Solution

The fourth proportional to 640,202.24, 883,455.28 and 353,716.16 is: 488,115.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,202.24 : 883,455.28 = 353,716.16 : x
  2. Step 2: Convert to fraction form
    640,202.24/883,455.28 = 353,716.16/x
  3. Step 3: Cross multiply
    640,202.24x = 883,455.28 × 353,716.16
  4. Step 4: Simplify right side
    640,202.24x = 312,492,409,173.33
  5. Step 5: Solve for x
    x = 312,492,409,173.33/640,202.24
  6. Step 6: Final answer
    x = 488,115.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.