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Finding the Fourth Proportional to 342,759.67, 472,753.46 and 221,807.63

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Solution

The fourth proportional to 342,759.67, 472,753.46 and 221,807.63 is: 305,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,759.67 : 472,753.46 = 221,807.63 : x
  2. Step 2: Convert to fraction form
    342,759.67/472,753.46 = 221,807.63/x
  3. Step 3: Cross multiply
    342,759.67x = 472,753.46 × 221,807.63
  4. Step 4: Simplify right side
    342,759.67x = 104,860,326,273.30
  5. Step 5: Solve for x
    x = 104,860,326,273.30/342,759.67
  6. Step 6: Final answer
    x = 305,929.60

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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.