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Finding the Fourth Proportional to 245,436.72, 368,135.62 and 87,648.72

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Solution

The fourth proportional to 245,436.72, 368,135.62 and 87,648.72 is: 131,466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,436.72 : 368,135.62 = 87,648.72 : x
  2. Step 2: Convert to fraction form
    245,436.72/368,135.62 = 87,648.72/x
  3. Step 3: Cross multiply
    245,436.72x = 368,135.62 × 87,648.72
  4. Step 4: Simplify right side
    245,436.72x = 32,266,615,879.41
  5. Step 5: Solve for x
    x = 32,266,615,879.41/245,436.72
  6. Step 6: Final answer
    x = 131,466.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.