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Finding the Fourth Proportional to 280,244.83, 420,355.48 and 130,433.59

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Solution

The fourth proportional to 280,244.83, 420,355.48 and 130,433.59 is: 195,644.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,244.83 : 420,355.48 = 130,433.59 : x
  2. Step 2: Convert to fraction form
    280,244.83/420,355.48 = 130,433.59/x
  3. Step 3: Cross multiply
    280,244.83x = 420,355.48 × 130,433.59
  4. Step 4: Simplify right side
    280,244.83x = 54,828,474,332.57
  5. Step 5: Solve for x
    x = 54,828,474,332.57/280,244.83
  6. Step 6: Final answer
    x = 195,644.91

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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.