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Finding the Fourth Proportional to 242,040.75, 334,040.72 and 138,688.63

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Solution

The fourth proportional to 242,040.75, 334,040.72 and 138,688.63 is: 191,404.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,040.75 : 334,040.72 = 138,688.63 : x
  2. Step 2: Convert to fraction form
    242,040.75/334,040.72 = 138,688.63/x
  3. Step 3: Cross multiply
    242,040.75x = 334,040.72 × 138,688.63
  4. Step 4: Simplify right side
    242,040.75x = 46,327,649,821.01
  5. Step 5: Solve for x
    x = 46,327,649,821.01/242,040.75
  6. Step 6: Final answer
    x = 191,404.34

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1.5x scale

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.