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Finding the Fourth Proportional to 280,835.53, 387,756 and 173,552.65

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Solution

The fourth proportional to 280,835.53, 387,756 and 173,552.65 is: 239,628.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,835.53 : 387,756 = 173,552.65 : x
  2. Step 2: Convert to fraction form
    280,835.53/387,756 = 173,552.65/x
  3. Step 3: Cross multiply
    280,835.53x = 387,756 × 173,552.65
  4. Step 4: Simplify right side
    280,835.53x = 67,296,081,353.40
  5. Step 5: Solve for x
    x = 67,296,081,353.40/280,835.53
  6. Step 6: Final answer
    x = 239,628.09

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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.