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Finding the Fourth Proportional to 247,269.72, 369,985.50 and 147,484.20

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Solution

The fourth proportional to 247,269.72, 369,985.50 and 147,484.20 is: 220,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,269.72 : 369,985.50 = 147,484.20 : x
  2. Step 2: Convert to fraction form
    247,269.72/369,985.50 = 147,484.20/x
  3. Step 3: Cross multiply
    247,269.72x = 369,985.50 × 147,484.20
  4. Step 4: Simplify right side
    247,269.72x = 54,567,015,479.10
  5. Step 5: Solve for x
    x = 54,567,015,479.10/247,269.72
  6. Step 6: Final answer
    x = 220,678.11

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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.