Home / 438,103.10-657,080.13-122,486.60

Finding the Fourth Proportional to 438,103.10, 657,080.13 and 122,486.60

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Solution

The fourth proportional to 438,103.10, 657,080.13 and 122,486.60 is: 183,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,103.10 : 657,080.13 = 122,486.60 : x
  2. Step 2: Convert to fraction form
    438,103.10/657,080.13 = 122,486.60/x
  3. Step 3: Cross multiply
    438,103.10x = 657,080.13 × 122,486.60
  4. Step 4: Simplify right side
    438,103.10x = 80,483,511,051.26
  5. Step 5: Solve for x
    x = 80,483,511,051.26/438,103.10
  6. Step 6: Final answer
    x = 183,709.07

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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.