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Finding the Fourth Proportional to 342,332.26, 472,259.32 and 221,512.55

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Solution

The fourth proportional to 342,332.26, 472,259.32 and 221,512.55 is: 305,584.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,332.26 : 472,259.32 = 221,512.55 : x
  2. Step 2: Convert to fraction form
    342,332.26/472,259.32 = 221,512.55/x
  3. Step 3: Cross multiply
    342,332.26x = 472,259.32 × 221,512.55
  4. Step 4: Simplify right side
    342,332.26x = 104,611,363,319.39
  5. Step 5: Solve for x
    x = 104,611,363,319.39/342,332.26
  6. Step 6: Final answer
    x = 305,584.30

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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.