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Finding the Fourth Proportional to 317,897.94, 438,708.50 and 181,975.55

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Solution

The fourth proportional to 317,897.94, 438,708.50 and 181,975.55 is: 251,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,897.94 : 438,708.50 = 181,975.55 : x
  2. Step 2: Convert to fraction form
    317,897.94/438,708.50 = 181,975.55/x
  3. Step 3: Cross multiply
    317,897.94x = 438,708.50 × 181,975.55
  4. Step 4: Simplify right side
    317,897.94x = 79,834,217,473.75
  5. Step 5: Solve for x
    x = 79,834,217,473.75/317,897.94
  6. Step 6: Final answer
    x = 251,131.60

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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.