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Finding the Fourth Proportional to 351,897.30, 527,846.76 and 85,657.32

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Solution

The fourth proportional to 351,897.30, 527,846.76 and 85,657.32 is: 128,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,897.30 : 527,846.76 = 85,657.32 : x
  2. Step 2: Convert to fraction form
    351,897.30/527,846.76 = 85,657.32/x
  3. Step 3: Cross multiply
    351,897.30x = 527,846.76 × 85,657.32
  4. Step 4: Simplify right side
    351,897.30x = 45,213,938,832.28
  5. Step 5: Solve for x
    x = 45,213,938,832.28/351,897.30
  6. Step 6: Final answer
    x = 128,486.18

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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.