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Finding the Fourth Proportional to 315,214.72, 435,008.52 and 179,261.08

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Solution

The fourth proportional to 315,214.72, 435,008.52 and 179,261.08 is: 247,387.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,214.72 : 435,008.52 = 179,261.08 : x
  2. Step 2: Convert to fraction form
    315,214.72/435,008.52 = 179,261.08/x
  3. Step 3: Cross multiply
    315,214.72x = 435,008.52 × 179,261.08
  4. Step 4: Simplify right side
    315,214.72x = 77,980,096,016.88
  5. Step 5: Solve for x
    x = 77,980,096,016.88/315,214.72
  6. Step 6: Final answer
    x = 247,387.23

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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.