Home / 315,731.60-473,194.20-128,531.60

Finding the Fourth Proportional to 315,731.60, 473,194.20 and 128,531.60

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Solution

The fourth proportional to 315,731.60, 473,194.20 and 128,531.60 is: 192,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,731.60 : 473,194.20 = 128,531.60 : x
  2. Step 2: Convert to fraction form
    315,731.60/473,194.20 = 128,531.60/x
  3. Step 3: Cross multiply
    315,731.60x = 473,194.20 × 128,531.60
  4. Step 4: Simplify right side
    315,731.60x = 60,820,407,636.72
  5. Step 5: Solve for x
    x = 60,820,407,636.72/315,731.60
  6. Step 6: Final answer
    x = 192,633.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.