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Finding the Fourth Proportional to 287,851.38, 431,673.39 and 121,652.34

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Solution

The fourth proportional to 287,851.38, 431,673.39 and 121,652.34 is: 182,434.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,851.38 : 431,673.39 = 121,652.34 : x
  2. Step 2: Convert to fraction form
    287,851.38/431,673.39 = 121,652.34/x
  3. Step 3: Cross multiply
    287,851.38x = 431,673.39 × 121,652.34
  4. Step 4: Simplify right side
    287,851.38x = 52,514,078,009.23
  5. Step 5: Solve for x
    x = 52,514,078,009.23/287,851.38
  6. Step 6: Final answer
    x = 182,434.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.