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Finding the Fourth Proportional to 342,669, 472,817.61 and 221,793.51

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Solution

The fourth proportional to 342,669, 472,817.61 and 221,793.51 is: 306,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,669 : 472,817.61 = 221,793.51 : x
  2. Step 2: Convert to fraction form
    342,669/472,817.61 = 221,793.51/x
  3. Step 3: Cross multiply
    342,669x = 472,817.61 × 221,793.51
  4. Step 4: Simplify right side
    342,669x = 104,867,877,311.71
  5. Step 5: Solve for x
    x = 104,867,877,311.71/342,669
  6. Step 6: Final answer
    x = 306,032.58

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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.