Home / 345,459.39-518,339.67-120,980.85

Finding the Fourth Proportional to 345,459.39, 518,339.67 and 120,980.85

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Solution

The fourth proportional to 345,459.39, 518,339.67 and 120,980.85 is: 181,524.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,459.39 : 518,339.67 = 120,980.85 : x
  2. Step 2: Convert to fraction form
    345,459.39/518,339.67 = 120,980.85/x
  3. Step 3: Cross multiply
    345,459.39x = 518,339.67 × 120,980.85
  4. Step 4: Simplify right side
    345,459.39x = 62,709,173,865.32
  5. Step 5: Solve for x
    x = 62,709,173,865.32/345,459.39
  6. Step 6: Final answer
    x = 181,524.01

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1.5x scale

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.