Home / 345,448.38-518,172.59-134,938.70

Finding the Fourth Proportional to 345,448.38, 518,172.59 and 134,938.70

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Solution

The fourth proportional to 345,448.38, 518,172.59 and 134,938.70 is: 202,408.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,448.38 : 518,172.59 = 134,938.70 : x
  2. Step 2: Convert to fraction form
    345,448.38/518,172.59 = 134,938.70/x
  3. Step 3: Cross multiply
    345,448.38x = 518,172.59 × 134,938.70
  4. Step 4: Simplify right side
    345,448.38x = 69,921,535,670.23
  5. Step 5: Solve for x
    x = 69,921,535,670.23/345,448.38
  6. Step 6: Final answer
    x = 202,408.06

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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.