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Finding the Fourth Proportional to 346,716.80, 520,075.20 and 199,260.80

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Solution

The fourth proportional to 346,716.80, 520,075.20 and 199,260.80 is: 298,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,716.80 : 520,075.20 = 199,260.80 : x
  2. Step 2: Convert to fraction form
    346,716.80/520,075.20 = 199,260.80/x
  3. Step 3: Cross multiply
    346,716.80x = 520,075.20 × 199,260.80
  4. Step 4: Simplify right side
    346,716.80x = 103,630,600,412.16
  5. Step 5: Solve for x
    x = 103,630,600,412.16/346,716.80
  6. Step 6: Final answer
    x = 298,891.20

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1.5x scale

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.