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Finding the Fourth Proportional to 342,686.21, 472,845.11 and 197,465.76

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Solution

The fourth proportional to 342,686.21, 472,845.11 and 197,465.76 is: 272,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,686.21 : 472,845.11 = 197,465.76 : x
  2. Step 2: Convert to fraction form
    342,686.21/472,845.11 = 197,465.76/x
  3. Step 3: Cross multiply
    342,686.21x = 472,845.11 × 197,465.76
  4. Step 4: Simplify right side
    342,686.21x = 93,370,718,021.10
  5. Step 5: Solve for x
    x = 93,370,718,021.10/342,686.21
  6. Step 6: Final answer
    x = 272,467.10

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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.