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Finding the Fourth Proportional to 331,389.60, 448,075.80 and 331,389.60

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Solution

The fourth proportional to 331,389.60, 448,075.80 and 331,389.60 is: 448,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,389.60 : 448,075.80 = 331,389.60 : x
  2. Step 2: Convert to fraction form
    331,389.60/448,075.80 = 331,389.60/x
  3. Step 3: Cross multiply
    331,389.60x = 448,075.80 × 331,389.60
  4. Step 4: Simplify right side
    331,389.60x = 148,487,660,131.68
  5. Step 5: Solve for x
    x = 148,487,660,131.68/331,389.60
  6. Step 6: Final answer
    x = 448,075.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.