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Finding the Fourth Proportional to 269,130.70, 403,210.05 and 156,718.90

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Solution

The fourth proportional to 269,130.70, 403,210.05 and 156,718.90 is: 234,795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,130.70 : 403,210.05 = 156,718.90 : x
  2. Step 2: Convert to fraction form
    269,130.70/403,210.05 = 156,718.90/x
  3. Step 3: Cross multiply
    269,130.70x = 403,210.05 × 156,718.90
  4. Step 4: Simplify right side
    269,130.70x = 63,190,635,504.95
  5. Step 5: Solve for x
    x = 63,190,635,504.95/269,130.70
  6. Step 6: Final answer
    x = 234,795.34

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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.