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Finding the Fourth Proportional to 286,641.78, 395,673.02 and 215,228.13

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Solution

The fourth proportional to 286,641.78, 395,673.02 and 215,228.13 is: 297,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,641.78 : 395,673.02 = 215,228.13 : x
  2. Step 2: Convert to fraction form
    286,641.78/395,673.02 = 215,228.13/x
  3. Step 3: Cross multiply
    286,641.78x = 395,673.02 × 215,228.13
  4. Step 4: Simplify right side
    286,641.78x = 85,159,964,186.05
  5. Step 5: Solve for x
    x = 85,159,964,186.05/286,641.78
  6. Step 6: Final answer
    x = 297,095.43

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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.