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Finding the Fourth Proportional to 374,526.90, 561,527.88 and 137,838.78

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Solution

The fourth proportional to 374,526.90, 561,527.88 and 137,838.78 is: 206,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,526.90 : 561,527.88 = 137,838.78 : x
  2. Step 2: Convert to fraction form
    374,526.90/561,527.88 = 137,838.78/x
  3. Step 3: Cross multiply
    374,526.90x = 561,527.88 × 137,838.78
  4. Step 4: Simplify right side
    374,526.90x = 77,400,317,915.19
  5. Step 5: Solve for x
    x = 77,400,317,915.19/374,526.90
  6. Step 6: Final answer
    x = 206,661.57

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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.