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Finding the Fourth Proportional to 315,809.32, 473,694.54 and 105,429.64

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Solution

The fourth proportional to 315,809.32, 473,694.54 and 105,429.64 is: 158,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,809.32 : 473,694.54 = 105,429.64 : x
  2. Step 2: Convert to fraction form
    315,809.32/473,694.54 = 105,429.64/x
  3. Step 3: Cross multiply
    315,809.32x = 473,694.54 × 105,429.64
  4. Step 4: Simplify right side
    315,809.32x = 49,941,444,822.17
  5. Step 5: Solve for x
    x = 49,941,444,822.17/315,809.32
  6. Step 6: Final answer
    x = 158,137.97

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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.