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Finding the Fourth Proportional to 445,373.90, 613,791.71 and 316,318.01

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Solution

The fourth proportional to 445,373.90, 613,791.71 and 316,318.01 is: 435,933.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,373.90 : 613,791.71 = 316,318.01 : x
  2. Step 2: Convert to fraction form
    445,373.90/613,791.71 = 316,318.01/x
  3. Step 3: Cross multiply
    445,373.90x = 613,791.71 × 316,318.01
  4. Step 4: Simplify right side
    445,373.90x = 194,153,372,261.70
  5. Step 5: Solve for x
    x = 194,153,372,261.70/445,373.90
  6. Step 6: Final answer
    x = 435,933.44

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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.