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Finding the Fourth Proportional to 346,821, 520,336.38 and 245,814.42

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Solution

The fourth proportional to 346,821, 520,336.38 and 245,814.42 is: 368,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,821 : 520,336.38 = 245,814.42 : x
  2. Step 2: Convert to fraction form
    346,821/520,336.38 = 245,814.42/x
  3. Step 3: Cross multiply
    346,821x = 520,336.38 × 245,814.42
  4. Step 4: Simplify right side
    346,821x = 127,906,185,454.60
  5. Step 5: Solve for x
    x = 127,906,185,454.60/346,821
  6. Step 6: Final answer
    x = 368,795.97

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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.