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Finding the Fourth Proportional to 315,631.62, 473,528.84 and 91,009.71

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Solution

The fourth proportional to 315,631.62, 473,528.84 and 91,009.71 is: 136,538.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,631.62 : 473,528.84 = 91,009.71 : x
  2. Step 2: Convert to fraction form
    315,631.62/473,528.84 = 91,009.71/x
  3. Step 3: Cross multiply
    315,631.62x = 473,528.84 × 91,009.71
  4. Step 4: Simplify right side
    315,631.62x = 43,095,721,949.99
  5. Step 5: Solve for x
    x = 43,095,721,949.99/315,631.62
  6. Step 6: Final answer
    x = 136,538.04

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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.