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Finding the Fourth Proportional to 342,295.83, 472,211.08 and 221,476.50

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Solution

The fourth proportional to 342,295.83, 472,211.08 and 221,476.50 is: 305,535.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,295.83 : 472,211.08 = 221,476.50 : x
  2. Step 2: Convert to fraction form
    342,295.83/472,211.08 = 221,476.50/x
  3. Step 3: Cross multiply
    342,295.83x = 472,211.08 × 221,476.50
  4. Step 4: Simplify right side
    342,295.83x = 104,583,657,259.62
  5. Step 5: Solve for x
    x = 104,583,657,259.62/342,295.83
  6. Step 6: Final answer
    x = 305,535.88

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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.