Home / 280,929.18-387,682.26-153,604.76

Finding the Fourth Proportional to 280,929.18, 387,682.26 and 153,604.76

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Solution

The fourth proportional to 280,929.18, 387,682.26 and 153,604.76 is: 211,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,929.18 : 387,682.26 = 153,604.76 : x
  2. Step 2: Convert to fraction form
    280,929.18/387,682.26 = 153,604.76/x
  3. Step 3: Cross multiply
    280,929.18x = 387,682.26 × 153,604.76
  4. Step 4: Simplify right side
    280,929.18x = 59,549,840,503.56
  5. Step 5: Solve for x
    x = 59,549,840,503.56/280,929.18
  6. Step 6: Final answer
    x = 211,974.56

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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.