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Finding the Fourth Proportional to 468,420.21, 646,420.28 and 253,559.61

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Solution

The fourth proportional to 468,420.21, 646,420.28 and 253,559.61 is: 349,912.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,420.21 : 646,420.28 = 253,559.61 : x
  2. Step 2: Convert to fraction form
    468,420.21/646,420.28 = 253,559.61/x
  3. Step 3: Cross multiply
    468,420.21x = 646,420.28 × 253,559.61
  4. Step 4: Simplify right side
    468,420.21x = 163,906,072,825.09
  5. Step 5: Solve for x
    x = 163,906,072,825.09/468,420.21
  6. Step 6: Final answer
    x = 349,912.47

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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.