Home / 386,465.40-579,741.30-120,223.80

Finding the Fourth Proportional to 386,465.40, 579,741.30 and 120,223.80

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Solution

The fourth proportional to 386,465.40, 579,741.30 and 120,223.80 is: 180,349.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,465.40 : 579,741.30 = 120,223.80 : x
  2. Step 2: Convert to fraction form
    386,465.40/579,741.30 = 120,223.80/x
  3. Step 3: Cross multiply
    386,465.40x = 579,741.30 × 120,223.80
  4. Step 4: Simplify right side
    386,465.40x = 69,698,702,102.94
  5. Step 5: Solve for x
    x = 69,698,702,102.94/386,465.40
  6. Step 6: Final answer
    x = 180,349.14

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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.