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Finding the Fourth Proportional to 315,090.69, 434,862.54 and 179,145.15

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Solution

The fourth proportional to 315,090.69, 434,862.54 and 179,145.15 is: 247,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,090.69 : 434,862.54 = 179,145.15 : x
  2. Step 2: Convert to fraction form
    315,090.69/434,862.54 = 179,145.15/x
  3. Step 3: Cross multiply
    315,090.69x = 434,862.54 × 179,145.15
  4. Step 4: Simplify right side
    315,090.69x = 77,903,514,957.68
  5. Step 5: Solve for x
    x = 77,903,514,957.68/315,090.69
  6. Step 6: Final answer
    x = 247,241.56

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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.