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Finding the Fourth Proportional to 553,021.60, 829,175.28 and 303,636.64

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Solution

The fourth proportional to 553,021.60, 829,175.28 and 303,636.64 is: 455,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,021.60 : 829,175.28 = 303,636.64 : x
  2. Step 2: Convert to fraction form
    553,021.60/829,175.28 = 303,636.64/x
  3. Step 3: Cross multiply
    553,021.60x = 829,175.28 × 303,636.64
  4. Step 4: Simplify right side
    553,021.60x = 251,767,995,990.26
  5. Step 5: Solve for x
    x = 251,767,995,990.26/553,021.60
  6. Step 6: Final answer
    x = 455,258.88

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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.