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Finding the Fourth Proportional to 342,299.59, 472,475.16 and 221,437.80

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Solution

The fourth proportional to 342,299.59, 472,475.16 and 221,437.80 is: 305,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,299.59 : 472,475.16 = 221,437.80 : x
  2. Step 2: Convert to fraction form
    342,299.59/472,475.16 = 221,437.80/x
  3. Step 3: Cross multiply
    342,299.59x = 472,475.16 × 221,437.80
  4. Step 4: Simplify right side
    342,299.59x = 104,623,859,985.05
  5. Step 5: Solve for x
    x = 104,623,859,985.05/342,299.59
  6. Step 6: Final answer
    x = 305,649.97

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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.