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Finding the Fourth Proportional to 280,069.92, 386,499.60 and 152,745.12

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Solution

The fourth proportional to 280,069.92, 386,499.60 and 152,745.12 is: 210,789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,069.92 : 386,499.60 = 152,745.12 : x
  2. Step 2: Convert to fraction form
    280,069.92/386,499.60 = 152,745.12/x
  3. Step 3: Cross multiply
    280,069.92x = 386,499.60 × 152,745.12
  4. Step 4: Simplify right side
    280,069.92x = 59,035,927,781.95
  5. Step 5: Solve for x
    x = 59,035,927,781.95/280,069.92
  6. Step 6: Final answer
    x = 210,789.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.