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Finding the Fourth Proportional to 620,695.77, 931,042.44 and 171,415.50

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Solution

The fourth proportional to 620,695.77, 931,042.44 and 171,415.50 is: 257,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,695.77 : 931,042.44 = 171,415.50 : x
  2. Step 2: Convert to fraction form
    620,695.77/931,042.44 = 171,415.50/x
  3. Step 3: Cross multiply
    620,695.77x = 931,042.44 × 171,415.50
  4. Step 4: Simplify right side
    620,695.77x = 159,595,105,373.82
  5. Step 5: Solve for x
    x = 159,595,105,373.82/620,695.77
  6. Step 6: Final answer
    x = 257,122.91

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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.