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Finding the Fourth Proportional to 221,442.80, 332,280.86 and 128,014.16

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Solution

The fourth proportional to 221,442.80, 332,280.86 and 128,014.16 is: 192,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,442.80 : 332,280.86 = 128,014.16 : x
  2. Step 2: Convert to fraction form
    221,442.80/332,280.86 = 128,014.16/x
  3. Step 3: Cross multiply
    221,442.80x = 332,280.86 × 128,014.16
  4. Step 4: Simplify right side
    221,442.80x = 42,536,655,176.98
  5. Step 5: Solve for x
    x = 42,536,655,176.98/221,442.80
  6. Step 6: Final answer
    x = 192,088.68

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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.