Home / 386,916.48-580,448.88-134,187.12

Finding the Fourth Proportional to 386,916.48, 580,448.88 and 134,187.12

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Solution

The fourth proportional to 386,916.48, 580,448.88 and 134,187.12 is: 201,306.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,916.48 : 580,448.88 = 134,187.12 : x
  2. Step 2: Convert to fraction form
    386,916.48/580,448.88 = 134,187.12/x
  3. Step 3: Cross multiply
    386,916.48x = 580,448.88 × 134,187.12
  4. Step 4: Simplify right side
    386,916.48x = 77,888,763,514.43
  5. Step 5: Solve for x
    x = 77,888,763,514.43/386,916.48
  6. Step 6: Final answer
    x = 201,306.40

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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.