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Finding the Fourth Proportional to 272,475.90, 408,597.21 and 85,501.98

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Solution

The fourth proportional to 272,475.90, 408,597.21 and 85,501.98 is: 128,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,475.90 : 408,597.21 = 85,501.98 : x
  2. Step 2: Convert to fraction form
    272,475.90/408,597.21 = 85,501.98/x
  3. Step 3: Cross multiply
    272,475.90x = 408,597.21 × 85,501.98
  4. Step 4: Simplify right side
    272,475.90x = 34,935,870,477.48
  5. Step 5: Solve for x
    x = 34,935,870,477.48/272,475.90
  6. Step 6: Final answer
    x = 128,216.37

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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.