Home / 280,910.18-387,657.67-153,585.77

Finding the Fourth Proportional to 280,910.18, 387,657.67 and 153,585.77

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Solution

The fourth proportional to 280,910.18, 387,657.67 and 153,585.77 is: 211,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,910.18 : 387,657.67 = 153,585.77 : x
  2. Step 2: Convert to fraction form
    280,910.18/387,657.67 = 153,585.77/x
  3. Step 3: Cross multiply
    280,910.18x = 387,657.67 × 153,585.77
  4. Step 4: Simplify right side
    280,910.18x = 59,538,702,321.61
  5. Step 5: Solve for x
    x = 59,538,702,321.61/280,910.18
  6. Step 6: Final answer
    x = 211,949.25

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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.