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Finding the Fourth Proportional to 342,329.49, 472,255.65 and 221,509.74

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Solution

The fourth proportional to 342,329.49, 472,255.65 and 221,509.74 is: 305,580.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,329.49 : 472,255.65 = 221,509.74 : x
  2. Step 2: Convert to fraction form
    342,329.49/472,255.65 = 221,509.74/x
  3. Step 3: Cross multiply
    342,329.49x = 472,255.65 × 221,509.74
  4. Step 4: Simplify right side
    342,329.49x = 104,609,226,245.03
  5. Step 5: Solve for x
    x = 104,609,226,245.03/342,329.49
  6. Step 6: Final answer
    x = 305,580.53

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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.