Home / 280,339.59-386,854.20-152,990.58

Finding the Fourth Proportional to 280,339.59, 386,854.20 and 152,990.58

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Solution

The fourth proportional to 280,339.59, 386,854.20 and 152,990.58 is: 211,119.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,339.59 : 386,854.20 = 152,990.58 : x
  2. Step 2: Convert to fraction form
    280,339.59/386,854.20 = 152,990.58/x
  3. Step 3: Cross multiply
    280,339.59x = 386,854.20 × 152,990.58
  4. Step 4: Simplify right side
    280,339.59x = 59,185,048,433.44
  5. Step 5: Solve for x
    x = 59,185,048,433.44/280,339.59
  6. Step 6: Final answer
    x = 211,119.12

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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.