Home / 280,690.17-387,352.65-151,628.63

Finding the Fourth Proportional to 280,690.17, 387,352.65 and 151,628.63

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Solution

The fourth proportional to 280,690.17, 387,352.65 and 151,628.63 is: 209,247.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,690.17 : 387,352.65 = 151,628.63 : x
  2. Step 2: Convert to fraction form
    280,690.17/387,352.65 = 151,628.63/x
  3. Step 3: Cross multiply
    280,690.17x = 387,352.65 × 151,628.63
  4. Step 4: Simplify right side
    280,690.17x = 58,733,749,709.61
  5. Step 5: Solve for x
    x = 58,733,749,709.61/280,690.17
  6. Step 6: Final answer
    x = 209,247.62

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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.