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Finding the Fourth Proportional to 245,297.30, 338,644.60 and 148,518.50

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Solution

The fourth proportional to 245,297.30, 338,644.60 and 148,518.50 is: 205,036.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,297.30 : 338,644.60 = 148,518.50 : x
  2. Step 2: Convert to fraction form
    245,297.30/338,644.60 = 148,518.50/x
  3. Step 3: Cross multiply
    245,297.30x = 338,644.60 × 148,518.50
  4. Step 4: Simplify right side
    245,297.30x = 50,294,985,960.58
  5. Step 5: Solve for x
    x = 50,294,985,960.58/245,297.30
  6. Step 6: Final answer
    x = 205,036.86

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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.