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Finding the Fourth Proportional to 228,144.51, 342,264.94 and 85,986.77

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Solution

The fourth proportional to 228,144.51, 342,264.94 and 85,986.77 is: 128,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,144.51 : 342,264.94 = 85,986.77 : x
  2. Step 2: Convert to fraction form
    228,144.51/342,264.94 = 85,986.77/x
  3. Step 3: Cross multiply
    228,144.51x = 342,264.94 × 85,986.77
  4. Step 4: Simplify right side
    228,144.51x = 29,430,254,748.55
  5. Step 5: Solve for x
    x = 29,430,254,748.55/228,144.51
  6. Step 6: Final answer
    x = 128,998.30

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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.