Home / 280,421.13-386,979.14-153,096.72

Finding the Fourth Proportional to 280,421.13, 386,979.14 and 153,096.72

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Solution

The fourth proportional to 280,421.13, 386,979.14 and 153,096.72 is: 211,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,421.13 : 386,979.14 = 153,096.72 : x
  2. Step 2: Convert to fraction form
    280,421.13/386,979.14 = 153,096.72/x
  3. Step 3: Cross multiply
    280,421.13x = 386,979.14 × 153,096.72
  4. Step 4: Simplify right side
    280,421.13x = 59,245,236,276.94
  5. Step 5: Solve for x
    x = 59,245,236,276.94/280,421.13
  6. Step 6: Final answer
    x = 211,272.37

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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.