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Finding the Fourth Proportional to 247,280.49, 370,916.66 and 78,798.53

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Solution

The fourth proportional to 247,280.49, 370,916.66 and 78,798.53 is: 118,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,280.49 : 370,916.66 = 78,798.53 : x
  2. Step 2: Convert to fraction form
    247,280.49/370,916.66 = 78,798.53/x
  3. Step 3: Cross multiply
    247,280.49x = 370,916.66 × 78,798.53
  4. Step 4: Simplify right side
    247,280.49x = 29,227,685,311.93
  5. Step 5: Solve for x
    x = 29,227,685,311.93/247,280.49
  6. Step 6: Final answer
    x = 118,196.49

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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.