Home / 245,378.43-338,621.85-137,948.67

Finding the Fourth Proportional to 245,378.43, 338,621.85 and 137,948.67

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Solution

The fourth proportional to 245,378.43, 338,621.85 and 137,948.67 is: 190,368.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,378.43 : 338,621.85 = 137,948.67 : x
  2. Step 2: Convert to fraction form
    245,378.43/338,621.85 = 137,948.67/x
  3. Step 3: Cross multiply
    245,378.43x = 338,621.85 × 137,948.67
  4. Step 4: Simplify right side
    245,378.43x = 46,712,433,840.44
  5. Step 5: Solve for x
    x = 46,712,433,840.44/245,378.43
  6. Step 6: Final answer
    x = 190,368.95

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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.