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Finding the Fourth Proportional to 317,530.78, 438,197.44 and 174,303.88

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Solution

The fourth proportional to 317,530.78, 438,197.44 and 174,303.88 is: 240,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,530.78 : 438,197.44 = 174,303.88 : x
  2. Step 2: Convert to fraction form
    317,530.78/438,197.44 = 174,303.88/x
  3. Step 3: Cross multiply
    317,530.78x = 438,197.44 × 174,303.88
  4. Step 4: Simplify right side
    317,530.78x = 76,379,513,998.07
  5. Step 5: Solve for x
    x = 76,379,513,998.07/317,530.78
  6. Step 6: Final answer
    x = 240,542.08

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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.