Home / 280,520.72-420,784.80-93,532.28

Finding the Fourth Proportional to 280,520.72, 420,784.80 and 93,532.28

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Solution

The fourth proportional to 280,520.72, 420,784.80 and 93,532.28 is: 140,299.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,520.72 : 420,784.80 = 93,532.28 : x
  2. Step 2: Convert to fraction form
    280,520.72/420,784.80 = 93,532.28/x
  3. Step 3: Cross multiply
    280,520.72x = 420,784.80 × 93,532.28
  4. Step 4: Simplify right side
    280,520.72x = 39,356,961,733.34
  5. Step 5: Solve for x
    x = 39,356,961,733.34/280,520.72
  6. Step 6: Final answer
    x = 140,299.66

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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.