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Finding the Fourth Proportional to 296,031.50, 408,533.20 and 161,895.50

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Solution

The fourth proportional to 296,031.50, 408,533.20 and 161,895.50 is: 223,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,031.50 : 408,533.20 = 161,895.50 : x
  2. Step 2: Convert to fraction form
    296,031.50/408,533.20 = 161,895.50/x
  3. Step 3: Cross multiply
    296,031.50x = 408,533.20 × 161,895.50
  4. Step 4: Simplify right side
    296,031.50x = 66,139,686,680.60
  5. Step 5: Solve for x
    x = 66,139,686,680.60/296,031.50
  6. Step 6: Final answer
    x = 223,421.11

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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.