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Finding the Fourth Proportional to 445,373.39, 613,791.02 and 316,317.51

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Solution

The fourth proportional to 445,373.39, 613,791.02 and 316,317.51 is: 435,932.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,373.39 : 613,791.02 = 316,317.51 : x
  2. Step 2: Convert to fraction form
    445,373.39/613,791.02 = 316,317.51/x
  3. Step 3: Cross multiply
    445,373.39x = 613,791.02 × 316,317.51
  4. Step 4: Simplify right side
    445,373.39x = 194,152,847,897.55
  5. Step 5: Solve for x
    x = 194,152,847,897.55/445,373.39
  6. Step 6: Final answer
    x = 435,932.75

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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.