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Finding the Fourth Proportional to 494,075.80, 741,113.70 and 139,101.40

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Solution

The fourth proportional to 494,075.80, 741,113.70 and 139,101.40 is: 208,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,075.80 : 741,113.70 = 139,101.40 : x
  2. Step 2: Convert to fraction form
    494,075.80/741,113.70 = 139,101.40/x
  3. Step 3: Cross multiply
    494,075.80x = 741,113.70 × 139,101.40
  4. Step 4: Simplify right side
    494,075.80x = 103,089,953,229.18
  5. Step 5: Solve for x
    x = 103,089,953,229.18/494,075.80
  6. Step 6: Final answer
    x = 208,652.10

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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.