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Finding the Fourth Proportional to 280,610.69, 387,228.31 and 153,261.68

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Solution

The fourth proportional to 280,610.69, 387,228.31 and 153,261.68 is: 211,493.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,610.69 : 387,228.31 = 153,261.68 : x
  2. Step 2: Convert to fraction form
    280,610.69/387,228.31 = 153,261.68/x
  3. Step 3: Cross multiply
    280,610.69x = 387,228.31 × 153,261.68
  4. Step 4: Simplify right side
    280,610.69x = 59,347,259,398.02
  5. Step 5: Solve for x
    x = 59,347,259,398.02/280,610.69
  6. Step 6: Final answer
    x = 211,493.23

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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.