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Finding the Fourth Proportional to 272,567.34, 408,868.32 and 85,586.22

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Solution

The fourth proportional to 272,567.34, 408,868.32 and 85,586.22 is: 128,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,567.34 : 408,868.32 = 85,586.22 : x
  2. Step 2: Convert to fraction form
    272,567.34/408,868.32 = 85,586.22/x
  3. Step 3: Cross multiply
    272,567.34x = 408,868.32 × 85,586.22
  4. Step 4: Simplify right side
    272,567.34x = 34,993,493,986.55
  5. Step 5: Solve for x
    x = 34,993,493,986.55/272,567.34
  6. Step 6: Final answer
    x = 128,384.77

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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.