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Finding the Fourth Proportional to 351,802.95, 527,699.41 and 85,563.95

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Solution

The fourth proportional to 351,802.95, 527,699.41 and 85,563.95 is: 128,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,802.95 : 527,699.41 = 85,563.95 : x
  2. Step 2: Convert to fraction form
    351,802.95/527,699.41 = 85,563.95/x
  3. Step 3: Cross multiply
    351,802.95x = 527,699.41 × 85,563.95
  4. Step 4: Simplify right side
    351,802.95x = 45,152,043,079.86
  5. Step 5: Solve for x
    x = 45,152,043,079.86/351,802.95
  6. Step 6: Final answer
    x = 128,344.70

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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.