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Finding the Fourth Proportional to 468,205.72, 646,121.82 and 253,349.59

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Solution

The fourth proportional to 468,205.72, 646,121.82 and 253,349.59 is: 349,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,205.72 : 646,121.82 = 253,349.59 : x
  2. Step 2: Convert to fraction form
    468,205.72/646,121.82 = 253,349.59/x
  3. Step 3: Cross multiply
    468,205.72x = 646,121.82 × 253,349.59
  4. Step 4: Simplify right side
    468,205.72x = 163,694,698,187.05
  5. Step 5: Solve for x
    x = 163,694,698,187.05/468,205.72
  6. Step 6: Final answer
    x = 349,621.31

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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.