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Finding the Fourth Proportional to 500,083.36, 690,115.88 and 270,640.85

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Solution

The fourth proportional to 500,083.36, 690,115.88 and 270,640.85 is: 373,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,083.36 : 690,115.88 = 270,640.85 : x
  2. Step 2: Convert to fraction form
    500,083.36/690,115.88 = 270,640.85/x
  3. Step 3: Cross multiply
    500,083.36x = 690,115.88 × 270,640.85
  4. Step 4: Simplify right side
    500,083.36x = 186,773,547,947.27
  5. Step 5: Solve for x
    x = 186,773,547,947.27/500,083.36
  6. Step 6: Final answer
    x = 373,484.83

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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.