Home / 320,457.07-480,686.64-120,723.82

Finding the Fourth Proportional to 320,457.07, 480,686.64 and 120,723.82

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Solution

The fourth proportional to 320,457.07, 480,686.64 and 120,723.82 is: 181,086.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,457.07 : 480,686.64 = 120,723.82 : x
  2. Step 2: Convert to fraction form
    320,457.07/480,686.64 = 120,723.82/x
  3. Step 3: Cross multiply
    320,457.07x = 480,686.64 × 120,723.82
  4. Step 4: Simplify right side
    320,457.07x = 58,030,327,403.76
  5. Step 5: Solve for x
    x = 58,030,327,403.76/320,457.07
  6. Step 6: Final answer
    x = 181,086.12

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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.