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Finding the Fourth Proportional to 280,228.68, 386,713.49 and 159,369.80

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Solution

The fourth proportional to 280,228.68, 386,713.49 and 159,369.80 is: 219,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,228.68 : 386,713.49 = 159,369.80 : x
  2. Step 2: Convert to fraction form
    280,228.68/386,713.49 = 159,369.80/x
  3. Step 3: Cross multiply
    280,228.68x = 386,713.49 × 159,369.80
  4. Step 4: Simplify right side
    280,228.68x = 61,630,448,828.19
  5. Step 5: Solve for x
    x = 61,630,448,828.19/280,228.68
  6. Step 6: Final answer
    x = 219,929.13

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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.