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Finding the Fourth Proportional to 252,990, 349,121.52 and 139,810.32

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Solution

The fourth proportional to 252,990, 349,121.52 and 139,810.32 is: 192,935.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,990 : 349,121.52 = 139,810.32 : x
  2. Step 2: Convert to fraction form
    252,990/349,121.52 = 139,810.32/x
  3. Step 3: Cross multiply
    252,990x = 349,121.52 × 139,810.32
  4. Step 4: Simplify right side
    252,990x = 48,810,791,430.09
  5. Step 5: Solve for x
    x = 48,810,791,430.09/252,990
  6. Step 6: Final answer
    x = 192,935.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.