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Finding the Fourth Proportional to 653,485.11, 980,288.21 and 254,155.92

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Solution

The fourth proportional to 653,485.11, 980,288.21 and 254,155.92 is: 381,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,485.11 : 980,288.21 = 254,155.92 : x
  2. Step 2: Convert to fraction form
    653,485.11/980,288.21 = 254,155.92/x
  3. Step 3: Cross multiply
    653,485.11x = 980,288.21 × 254,155.92
  4. Step 4: Simplify right side
    653,485.11x = 249,146,051,877.70
  5. Step 5: Solve for x
    x = 249,146,051,877.70/653,485.11
  6. Step 6: Final answer
    x = 381,257.43

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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.