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Finding the Fourth Proportional to 349,838.80, 525,017.40 and 139,627.60

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Solution

The fourth proportional to 349,838.80, 525,017.40 and 139,627.60 is: 209,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,838.80 : 525,017.40 = 139,627.60 : x
  2. Step 2: Convert to fraction form
    349,838.80/525,017.40 = 139,627.60/x
  3. Step 3: Cross multiply
    349,838.80x = 525,017.40 × 139,627.60
  4. Step 4: Simplify right side
    349,838.80x = 73,306,919,520.24
  5. Step 5: Solve for x
    x = 73,306,919,520.24/349,838.80
  6. Step 6: Final answer
    x = 209,544.85

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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.