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Finding the Fourth Proportional to 500,315.88, 690,441.42 and 270,878.16

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Solution

The fourth proportional to 500,315.88, 690,441.42 and 270,878.16 is: 373,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,315.88 : 690,441.42 = 270,878.16 : x
  2. Step 2: Convert to fraction form
    500,315.88/690,441.42 = 270,878.16/x
  3. Step 3: Cross multiply
    500,315.88x = 690,441.42 × 270,878.16
  4. Step 4: Simplify right side
    500,315.88x = 187,025,501,437.39
  5. Step 5: Solve for x
    x = 187,025,501,437.39/500,315.88
  6. Step 6: Final answer
    x = 373,814.84

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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.