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Finding the Fourth Proportional to 315,155.04, 434,911.17 and 171,912.00

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Solution

The fourth proportional to 315,155.04, 434,911.17 and 171,912.00 is: 237,237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,155.04 : 434,911.17 = 171,912.00 : x
  2. Step 2: Convert to fraction form
    315,155.04/434,911.17 = 171,912.00/x
  3. Step 3: Cross multiply
    315,155.04x = 434,911.17 × 171,912.00
  4. Step 4: Simplify right side
    315,155.04x = 74,766,451,332.63
  5. Step 5: Solve for x
    x = 74,766,451,332.63/315,155.04
  6. Step 6: Final answer
    x = 237,237.05

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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.