Home / 280,197.72-420,370.02-93,210.84

Finding the Fourth Proportional to 280,197.72, 420,370.02 and 93,210.84

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Solution

The fourth proportional to 280,197.72, 420,370.02 and 93,210.84 is: 139,840.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,197.72 : 420,370.02 = 93,210.84 : x
  2. Step 2: Convert to fraction form
    280,197.72/420,370.02 = 93,210.84/x
  3. Step 3: Cross multiply
    280,197.72x = 420,370.02 × 93,210.84
  4. Step 4: Simplify right side
    280,197.72x = 39,183,042,675.02
  5. Step 5: Solve for x
    x = 39,183,042,675.02/280,197.72
  6. Step 6: Final answer
    x = 139,840.69

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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.