Home / 245,150.78-338,306.04-137,718.50

Finding the Fourth Proportional to 245,150.78, 338,306.04 and 137,718.50

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Solution

The fourth proportional to 245,150.78, 338,306.04 and 137,718.50 is: 190,050.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,150.78 : 338,306.04 = 137,718.50 : x
  2. Step 2: Convert to fraction form
    245,150.78/338,306.04 = 137,718.50/x
  3. Step 3: Cross multiply
    245,150.78x = 338,306.04 × 137,718.50
  4. Step 4: Simplify right side
    245,150.78x = 46,591,000,369.74
  5. Step 5: Solve for x
    x = 46,591,000,369.74/245,150.78
  6. Step 6: Final answer
    x = 190,050.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.