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Finding the Fourth Proportional to 280,680.49, 387,339.01 and 151,618.94

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Solution

The fourth proportional to 280,680.49, 387,339.01 and 151,618.94 is: 209,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680.49 : 387,339.01 = 151,618.94 : x
  2. Step 2: Convert to fraction form
    280,680.49/387,339.01 = 151,618.94/x
  3. Step 3: Cross multiply
    280,680.49x = 387,339.01 × 151,618.94
  4. Step 4: Simplify right side
    280,680.49x = 58,727,930,106.48
  5. Step 5: Solve for x
    x = 58,727,930,106.48/280,680.49
  6. Step 6: Final answer
    x = 209,234.10

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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.