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Finding the Fourth Proportional to 356,744.96, 491,900.80 and 285,075.84

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Solution

The fourth proportional to 356,744.96, 491,900.80 and 285,075.84 is: 393,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,744.96 : 491,900.80 = 285,075.84 : x
  2. Step 2: Convert to fraction form
    356,744.96/491,900.80 = 285,075.84/x
  3. Step 3: Cross multiply
    356,744.96x = 491,900.80 × 285,075.84
  4. Step 4: Simplify right side
    356,744.96x = 140,229,033,756.67
  5. Step 5: Solve for x
    x = 140,229,033,756.67/356,744.96
  6. Step 6: Final answer
    x = 393,079.23

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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.