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Finding the Fourth Proportional to 315,146.07, 434,900.01 and 171,904.86

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Solution

The fourth proportional to 315,146.07, 434,900.01 and 171,904.86 is: 237,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,146.07 : 434,900.01 = 171,904.86 : x
  2. Step 2: Convert to fraction form
    315,146.07/434,900.01 = 171,904.86/x
  3. Step 3: Cross multiply
    315,146.07x = 434,900.01 × 171,904.86
  4. Step 4: Simplify right side
    315,146.07x = 74,761,425,333.05
  5. Step 5: Solve for x
    x = 74,761,425,333.05/315,146.07
  6. Step 6: Final answer
    x = 237,227.85

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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.