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Finding the Fourth Proportional to 368,676.47, 553,014.45 and 102,436.87

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Solution

The fourth proportional to 368,676.47, 553,014.45 and 102,436.87 is: 153,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,676.47 : 553,014.45 = 102,436.87 : x
  2. Step 2: Convert to fraction form
    368,676.47/553,014.45 = 102,436.87/x
  3. Step 3: Cross multiply
    368,676.47x = 553,014.45 × 102,436.87
  4. Step 4: Simplify right side
    368,676.47x = 56,649,067,940.24
  5. Step 5: Solve for x
    x = 56,649,067,940.24/368,676.47
  6. Step 6: Final answer
    x = 153,655.23

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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.