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Finding the Fourth Proportional to 315,083.16, 434,818.26 and 171,842.76

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Solution

The fourth proportional to 315,083.16, 434,818.26 and 171,842.76 is: 237,144.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,083.16 : 434,818.26 = 171,842.76 : x
  2. Step 2: Convert to fraction form
    315,083.16/434,818.26 = 171,842.76/x
  3. Step 3: Cross multiply
    315,083.16x = 434,818.26 × 171,842.76
  4. Step 4: Simplify right side
    315,083.16x = 74,720,369,896.80
  5. Step 5: Solve for x
    x = 74,720,369,896.80/315,083.16
  6. Step 6: Final answer
    x = 237,144.92

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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.