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Finding the Fourth Proportional to 374,430.40, 561,645.60 and 342,937.60

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Solution

The fourth proportional to 374,430.40, 561,645.60 and 342,937.60 is: 514,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,430.40 : 561,645.60 = 342,937.60 : x
  2. Step 2: Convert to fraction form
    374,430.40/561,645.60 = 342,937.60/x
  3. Step 3: Cross multiply
    374,430.40x = 561,645.60 × 342,937.60
  4. Step 4: Simplify right side
    374,430.40x = 192,609,394,114.56
  5. Step 5: Solve for x
    x = 192,609,394,114.56/374,430.40
  6. Step 6: Final answer
    x = 514,406.40

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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.