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Finding the Fourth Proportional to 342,458.55, 472,537.60 and 215,043.93

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Solution

The fourth proportional to 342,458.55, 472,537.60 and 215,043.93 is: 296,725.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,458.55 : 472,537.60 = 215,043.93 : x
  2. Step 2: Convert to fraction form
    342,458.55/472,537.60 = 215,043.93/x
  3. Step 3: Cross multiply
    342,458.55x = 472,537.60 × 215,043.93
  4. Step 4: Simplify right side
    342,458.55x = 101,616,342,039.16
  5. Step 5: Solve for x
    x = 101,616,342,039.16/342,458.55
  6. Step 6: Final answer
    x = 296,725.96

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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.