Home / 280,384.20-420,576.30-93,395.70

Finding the Fourth Proportional to 280,384.20, 420,576.30 and 93,395.70

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Solution

The fourth proportional to 280,384.20, 420,576.30 and 93,395.70 is: 140,093.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,384.20 : 420,576.30 = 93,395.70 : x
  2. Step 2: Convert to fraction form
    280,384.20/420,576.30 = 93,395.70/x
  3. Step 3: Cross multiply
    280,384.20x = 420,576.30 × 93,395.70
  4. Step 4: Simplify right side
    280,384.20x = 39,280,017,941.91
  5. Step 5: Solve for x
    x = 39,280,017,941.91/280,384.20
  6. Step 6: Final answer
    x = 140,093.55

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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.