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Finding the Fourth Proportional to 247,989, 342,224 and 134,810.94

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Solution

The fourth proportional to 247,989, 342,224 and 134,810.94 is: 186,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,989 : 342,224 = 134,810.94 : x
  2. Step 2: Convert to fraction form
    247,989/342,224 = 134,810.94/x
  3. Step 3: Cross multiply
    247,989x = 342,224 × 134,810.94
  4. Step 4: Simplify right side
    247,989x = 46,135,539,130.56
  5. Step 5: Solve for x
    x = 46,135,539,130.56/247,989
  6. Step 6: Final answer
    x = 186,038.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.