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Finding the Fourth Proportional to 287,173.94, 430,372.72 and 207,348.44

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Solution

The fourth proportional to 287,173.94, 430,372.72 and 207,348.44 is: 310,742.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,173.94 : 430,372.72 = 207,348.44 : x
  2. Step 2: Convert to fraction form
    287,173.94/430,372.72 = 207,348.44/x
  3. Step 3: Cross multiply
    287,173.94x = 430,372.72 × 207,348.44
  4. Step 4: Simplify right side
    287,173.94x = 89,237,113,445.67
  5. Step 5: Solve for x
    x = 89,237,113,445.67/287,173.94
  6. Step 6: Final answer
    x = 310,742.38

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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.