Home / 280,898.50-387,639.94-151,836.55

Finding the Fourth Proportional to 280,898.50, 387,639.94 and 151,836.55

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Solution

The fourth proportional to 280,898.50, 387,639.94 and 151,836.55 is: 209,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,898.50 : 387,639.94 = 151,836.55 : x
  2. Step 2: Convert to fraction form
    280,898.50/387,639.94 = 151,836.55/x
  3. Step 3: Cross multiply
    280,898.50x = 387,639.94 × 151,836.55
  4. Step 4: Simplify right side
    280,898.50x = 58,857,911,131.81
  5. Step 5: Solve for x
    x = 58,857,911,131.81/280,898.50
  6. Step 6: Final answer
    x = 209,534.44

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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.