Home / 320,616.12-480,818.76-118,165.50

Finding the Fourth Proportional to 320,616.12, 480,818.76 and 118,165.50

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Solution

The fourth proportional to 320,616.12, 480,818.76 and 118,165.50 is: 177,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,616.12 : 480,818.76 = 118,165.50 : x
  2. Step 2: Convert to fraction form
    320,616.12/480,818.76 = 118,165.50/x
  3. Step 3: Cross multiply
    320,616.12x = 480,818.76 × 118,165.50
  4. Step 4: Simplify right side
    320,616.12x = 56,816,189,184.78
  5. Step 5: Solve for x
    x = 56,816,189,184.78/320,616.12
  6. Step 6: Final answer
    x = 177,209.40

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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.