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Finding the Fourth Proportional to 263,478.77, 363,810.30 and 243,328.28

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Solution

The fourth proportional to 263,478.77, 363,810.30 and 243,328.28 is: 335,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,478.77 : 363,810.30 = 243,328.28 : x
  2. Step 2: Convert to fraction form
    263,478.77/363,810.30 = 243,328.28/x
  3. Step 3: Cross multiply
    263,478.77x = 363,810.30 × 243,328.28
  4. Step 4: Simplify right side
    263,478.77x = 88,525,334,545.28
  5. Step 5: Solve for x
    x = 88,525,334,545.28/263,478.77
  6. Step 6: Final answer
    x = 335,986.59

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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.