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Finding the Fourth Proportional to 280,239.65, 386,783.45 and 175,512.12

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Solution

The fourth proportional to 280,239.65, 386,783.45 and 175,512.12 is: 242,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,239.65 : 386,783.45 = 175,512.12 : x
  2. Step 2: Convert to fraction form
    280,239.65/386,783.45 = 175,512.12/x
  3. Step 3: Cross multiply
    280,239.65x = 386,783.45 × 175,512.12
  4. Step 4: Simplify right side
    280,239.65x = 67,885,180,478.94
  5. Step 5: Solve for x
    x = 67,885,180,478.94/280,239.65
  6. Step 6: Final answer
    x = 242,239.74

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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.