Home / 280,749.71-387,434.76-153,425.31

Finding the Fourth Proportional to 280,749.71, 387,434.76 and 153,425.31

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Solution

The fourth proportional to 280,749.71, 387,434.76 and 153,425.31 is: 211,727.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,749.71 : 387,434.76 = 153,425.31 : x
  2. Step 2: Convert to fraction form
    280,749.71/387,434.76 = 153,425.31/x
  3. Step 3: Cross multiply
    280,749.71x = 387,434.76 × 153,425.31
  4. Step 4: Simplify right side
    280,749.71x = 59,442,298,157.78
  5. Step 5: Solve for x
    x = 59,442,298,157.78/280,749.71
  6. Step 6: Final answer
    x = 211,727.02

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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.