Home / 280,572.21-387,191.66-153,247.77

Finding the Fourth Proportional to 280,572.21, 387,191.66 and 153,247.77

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Solution

The fourth proportional to 280,572.21, 387,191.66 and 153,247.77 is: 211,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,572.21 : 387,191.66 = 153,247.77 : x
  2. Step 2: Convert to fraction form
    280,572.21/387,191.66 = 153,247.77/x
  3. Step 3: Cross multiply
    280,572.21x = 387,191.66 × 153,247.77
  4. Step 4: Simplify right side
    280,572.21x = 59,336,257,691.36
  5. Step 5: Solve for x
    x = 59,336,257,691.36/280,572.21
  6. Step 6: Final answer
    x = 211,483.02

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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.