Home / 280,610.56-387,228.48-153,262.72

Finding the Fourth Proportional to 280,610.56, 387,228.48 and 153,262.72

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Solution

The fourth proportional to 280,610.56, 387,228.48 and 153,262.72 is: 211,494.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,610.56 : 387,228.48 = 153,262.72 : x
  2. Step 2: Convert to fraction form
    280,610.56/387,228.48 = 153,262.72/x
  3. Step 3: Cross multiply
    280,610.56x = 387,228.48 × 153,262.72
  4. Step 4: Simplify right side
    280,610.56x = 59,347,690,106.27
  5. Step 5: Solve for x
    x = 59,347,690,106.27/280,610.56
  6. Step 6: Final answer
    x = 211,494.86

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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.