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Finding the Fourth Proportional to 468,571.40, 646,628.80 and 253,711.60

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Solution

The fourth proportional to 468,571.40, 646,628.80 and 253,711.60 is: 350,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,571.40 : 646,628.80 = 253,711.60 : x
  2. Step 2: Convert to fraction form
    468,571.40/646,628.80 = 253,711.60/x
  3. Step 3: Cross multiply
    468,571.40x = 646,628.80 × 253,711.60
  4. Step 4: Simplify right side
    468,571.40x = 164,057,227,454.08
  5. Step 5: Solve for x
    x = 164,057,227,454.08/468,571.40
  6. Step 6: Final answer
    x = 350,122.15

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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.