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Finding the Fourth Proportional to 245,253.96, 338,445.95 and 137,822.45

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Solution

The fourth proportional to 245,253.96, 338,445.95 and 137,822.45 is: 190,192.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,253.96 : 338,445.95 = 137,822.45 : x
  2. Step 2: Convert to fraction form
    245,253.96/338,445.95 = 137,822.45/x
  3. Step 3: Cross multiply
    245,253.96x = 338,445.95 × 137,822.45
  4. Step 4: Simplify right side
    245,253.96x = 46,645,447,640.24
  5. Step 5: Solve for x
    x = 46,645,447,640.24/245,253.96
  6. Step 6: Final answer
    x = 190,192.43

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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.