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Finding the Fourth Proportional to 374,270.79, 561,628.53 and 137,779.56

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Solution

The fourth proportional to 374,270.79, 561,628.53 and 137,779.56 is: 206,751.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,270.79 : 561,628.53 = 137,779.56 : x
  2. Step 2: Convert to fraction form
    374,270.79/561,628.53 = 137,779.56/x
  3. Step 3: Cross multiply
    374,270.79x = 561,628.53 × 137,779.56
  4. Step 4: Simplify right side
    374,270.79x = 77,380,931,746.85
  5. Step 5: Solve for x
    x = 77,380,931,746.85/374,270.79
  6. Step 6: Final answer
    x = 206,751.19

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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.