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Finding the Fourth Proportional to 349,841.80, 525,021.90 and 139,630.60

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Solution

The fourth proportional to 349,841.80, 525,021.90 and 139,630.60 is: 209,549.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,841.80 : 525,021.90 = 139,630.60 : x
  2. Step 2: Convert to fraction form
    349,841.80/525,021.90 = 139,630.60/x
  3. Step 3: Cross multiply
    349,841.80x = 525,021.90 × 139,630.60
  4. Step 4: Simplify right side
    349,841.80x = 73,309,122,910.14
  5. Step 5: Solve for x
    x = 73,309,122,910.14/349,841.80
  6. Step 6: Final answer
    x = 209,549.35

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1.5x scale

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.