Home / 315,327.27-435,152.85-172,090.50

Finding the Fourth Proportional to 315,327.27, 435,152.85 and 172,090.50

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Solution

The fourth proportional to 315,327.27, 435,152.85 and 172,090.50 is: 237,485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,327.27 : 435,152.85 = 172,090.50 : x
  2. Step 2: Convert to fraction form
    315,327.27/435,152.85 = 172,090.50/x
  3. Step 3: Cross multiply
    315,327.27x = 435,152.85 × 172,090.50
  4. Step 4: Simplify right side
    315,327.27x = 74,885,671,532.93
  5. Step 5: Solve for x
    x = 74,885,671,532.93/315,327.27
  6. Step 6: Final answer
    x = 237,485.55

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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.