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Finding the Fourth Proportional to 500,343.16, 690,472.64 and 270,900.40

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Solution

The fourth proportional to 500,343.16, 690,472.64 and 270,900.40 is: 373,842.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,343.16 : 690,472.64 = 270,900.40 : x
  2. Step 2: Convert to fraction form
    500,343.16/690,472.64 = 270,900.40/x
  3. Step 3: Cross multiply
    500,343.16x = 690,472.64 × 270,900.40
  4. Step 4: Simplify right side
    500,343.16x = 187,049,314,365.06
  5. Step 5: Solve for x
    x = 187,049,314,365.06/500,343.16
  6. Step 6: Final answer
    x = 373,842.05

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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.