Home / 321,102.10-481,307.55-121,345.30

Finding the Fourth Proportional to 321,102.10, 481,307.55 and 121,345.30

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Solution

The fourth proportional to 321,102.10, 481,307.55 and 121,345.30 is: 181,887.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,102.10 : 481,307.55 = 121,345.30 : x
  2. Step 2: Convert to fraction form
    321,102.10/481,307.55 = 121,345.30/x
  3. Step 3: Cross multiply
    321,102.10x = 481,307.55 × 121,345.30
  4. Step 4: Simplify right side
    321,102.10x = 58,404,409,047.02
  5. Step 5: Solve for x
    x = 58,404,409,047.02/321,102.10
  6. Step 6: Final answer
    x = 181,887.35

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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.