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Finding the Fourth Proportional to 312,310.53, 430,988.66 and 169,070.56

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Solution

The fourth proportional to 312,310.53, 430,988.66 and 169,070.56 is: 233,317.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,310.53 : 430,988.66 = 169,070.56 : x
  2. Step 2: Convert to fraction form
    312,310.53/430,988.66 = 169,070.56/x
  3. Step 3: Cross multiply
    312,310.53x = 430,988.66 × 169,070.56
  4. Step 4: Simplify right side
    312,310.53x = 72,867,495,600.00
  5. Step 5: Solve for x
    x = 72,867,495,600.00/312,310.53
  6. Step 6: Final answer
    x = 233,317.45

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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.