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Finding the Fourth Proportional to 245,601.53, 338,929.53 and 138,171.53

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Solution

The fourth proportional to 245,601.53, 338,929.53 and 138,171.53 is: 190,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,601.53 : 338,929.53 = 138,171.53 : x
  2. Step 2: Convert to fraction form
    245,601.53/338,929.53 = 138,171.53/x
  3. Step 3: Cross multiply
    245,601.53x = 338,929.53 × 138,171.53
  4. Step 4: Simplify right side
    245,601.53x = 46,830,411,722.28
  5. Step 5: Solve for x
    x = 46,830,411,722.28/245,601.53
  6. Step 6: Final answer
    x = 190,676.38

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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.