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Finding the Fourth Proportional to 252,955.56, 349,075.26 and 139,780.20

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Solution

The fourth proportional to 252,955.56, 349,075.26 and 139,780.20 is: 192,894.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,955.56 : 349,075.26 = 139,780.20 : x
  2. Step 2: Convert to fraction form
    252,955.56/349,075.26 = 139,780.20/x
  3. Step 3: Cross multiply
    252,955.56x = 349,075.26 × 139,780.20
  4. Step 4: Simplify right side
    252,955.56x = 48,793,809,657.85
  5. Step 5: Solve for x
    x = 48,793,809,657.85/252,955.56
  6. Step 6: Final answer
    x = 192,894.79

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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.