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Finding the Fourth Proportional to 368,686.50, 553,059.76 and 102,447.03

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Solution

The fourth proportional to 368,686.50, 553,059.76 and 102,447.03 is: 153,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,686.50 : 553,059.76 = 102,447.03 : x
  2. Step 2: Convert to fraction form
    368,686.50/553,059.76 = 102,447.03/x
  3. Step 3: Cross multiply
    368,686.50x = 553,059.76 × 102,447.03
  4. Step 4: Simplify right side
    368,686.50x = 56,659,329,568.40
  5. Step 5: Solve for x
    x = 56,659,329,568.40/368,686.50
  6. Step 6: Final answer
    x = 153,678.88

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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.