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Finding the Fourth Proportional to 387,442.96, 581,163.56 and 103,133.56

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Solution

The fourth proportional to 387,442.96, 581,163.56 and 103,133.56 is: 154,700.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,442.96 : 581,163.56 = 103,133.56 : x
  2. Step 2: Convert to fraction form
    387,442.96/581,163.56 = 103,133.56/x
  3. Step 3: Cross multiply
    387,442.96x = 581,163.56 × 103,133.56
  4. Step 4: Simplify right side
    387,442.96x = 59,937,466,885.07
  5. Step 5: Solve for x
    x = 59,937,466,885.07/387,442.96
  6. Step 6: Final answer
    x = 154,700.11

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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.