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Finding the Fourth Proportional to 228,254.64, 342,314.92 and 85,997.20

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Solution

The fourth proportional to 228,254.64, 342,314.92 and 85,997.20 is: 128,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,254.64 : 342,314.92 = 85,997.20 : x
  2. Step 2: Convert to fraction form
    228,254.64/342,314.92 = 85,997.20/x
  3. Step 3: Cross multiply
    228,254.64x = 342,314.92 × 85,997.20
  4. Step 4: Simplify right side
    228,254.64x = 29,438,124,638.22
  5. Step 5: Solve for x
    x = 29,438,124,638.22/228,254.64
  6. Step 6: Final answer
    x = 128,970.54

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1.5x scale

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.