Home / 345,965.03-518,944.42-109,307.69

Finding the Fourth Proportional to 345,965.03, 518,944.42 and 109,307.69

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Solution

The fourth proportional to 345,965.03, 518,944.42 and 109,307.69 is: 163,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,965.03 : 518,944.42 = 109,307.69 : x
  2. Step 2: Convert to fraction form
    345,965.03/518,944.42 = 109,307.69/x
  3. Step 3: Cross multiply
    345,965.03x = 518,944.42 × 109,307.69
  4. Step 4: Simplify right side
    345,965.03x = 56,724,615,788.59
  5. Step 5: Solve for x
    x = 56,724,615,788.59/345,965.03
  6. Step 6: Final answer
    x = 163,960.55

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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.