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Finding the Fourth Proportional to 500,307.78, 690,425.18 and 270,865.22

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Solution

The fourth proportional to 500,307.78, 690,425.18 and 270,865.22 is: 373,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,307.78 : 690,425.18 = 270,865.22 : x
  2. Step 2: Convert to fraction form
    500,307.78/690,425.18 = 270,865.22/x
  3. Step 3: Cross multiply
    500,307.78x = 690,425.18 × 270,865.22
  4. Step 4: Simplify right side
    500,307.78x = 187,012,168,274.24
  5. Step 5: Solve for x
    x = 187,012,168,274.24/500,307.78
  6. Step 6: Final answer
    x = 373,794.24

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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.