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Finding the Fourth Proportional to 620,724.73, 931,068.69 and 171,472.63

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Solution

The fourth proportional to 620,724.73, 931,068.69 and 171,472.63 is: 257,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,724.73 : 931,068.69 = 171,472.63 : x
  2. Step 2: Convert to fraction form
    620,724.73/931,068.69 = 171,472.63/x
  3. Step 3: Cross multiply
    620,724.73x = 931,068.69 × 171,472.63
  4. Step 4: Simplify right side
    620,724.73x = 159,652,796,984.96
  5. Step 5: Solve for x
    x = 159,652,796,984.96/620,724.73
  6. Step 6: Final answer
    x = 257,203.86

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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.