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Finding the Fourth Proportional to 342,341.55, 472,272.12 and 221,521.86

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Solution

The fourth proportional to 342,341.55, 472,272.12 and 221,521.86 is: 305,597.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,341.55 : 472,272.12 = 221,521.86 : x
  2. Step 2: Convert to fraction form
    342,341.55/472,272.12 = 221,521.86/x
  3. Step 3: Cross multiply
    342,341.55x = 472,272.12 × 221,521.86
  4. Step 4: Simplify right side
    342,341.55x = 104,618,598,448.54
  5. Step 5: Solve for x
    x = 104,618,598,448.54/342,341.55
  6. Step 6: Final answer
    x = 305,597.14

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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.