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Finding the Fourth Proportional to 315,141.60, 472,428.08 and 115,322.70

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Solution

The fourth proportional to 315,141.60, 472,428.08 and 115,322.70 is: 172,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,141.60 : 472,428.08 = 115,322.70 : x
  2. Step 2: Convert to fraction form
    315,141.60/472,428.08 = 115,322.70/x
  3. Step 3: Cross multiply
    315,141.60x = 472,428.08 × 115,322.70
  4. Step 4: Simplify right side
    315,141.60x = 54,481,681,741.42
  5. Step 5: Solve for x
    x = 54,481,681,741.42/315,141.60
  6. Step 6: Final answer
    x = 172,880.01

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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.