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Finding the Fourth Proportional to 248,445.20, 342,827.16 and 139,548.80

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Solution

The fourth proportional to 248,445.20, 342,827.16 and 139,548.80 is: 192,562.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,445.20 : 342,827.16 = 139,548.80 : x
  2. Step 2: Convert to fraction form
    248,445.20/342,827.16 = 139,548.80/x
  3. Step 3: Cross multiply
    248,445.20x = 342,827.16 × 139,548.80
  4. Step 4: Simplify right side
    248,445.20x = 47,841,118,785.41
  5. Step 5: Solve for x
    x = 47,841,118,785.41/248,445.20
  6. Step 6: Final answer
    x = 192,562.06

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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.