Home / 280,239.15-386,782.76-175,511.62

Finding the Fourth Proportional to 280,239.15, 386,782.76 and 175,511.62

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Solution

The fourth proportional to 280,239.15, 386,782.76 and 175,511.62 is: 242,239.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,239.15 : 386,782.76 = 175,511.62 : x
  2. Step 2: Convert to fraction form
    280,239.15/386,782.76 = 175,511.62/x
  3. Step 3: Cross multiply
    280,239.15x = 386,782.76 × 175,511.62
  4. Step 4: Simplify right side
    280,239.15x = 67,884,865,984.20
  5. Step 5: Solve for x
    x = 67,884,865,984.20/280,239.15
  6. Step 6: Final answer
    x = 242,239.05

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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.