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Finding the Fourth Proportional to 346,963.68, 478,625.19 and 211,039.20

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Solution

The fourth proportional to 346,963.68, 478,625.19 and 211,039.20 is: 291,121.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,963.68 : 478,625.19 = 211,039.20 : x
  2. Step 2: Convert to fraction form
    346,963.68/478,625.19 = 211,039.20/x
  3. Step 3: Cross multiply
    346,963.68x = 478,625.19 × 211,039.20
  4. Step 4: Simplify right side
    346,963.68x = 101,008,676,406.05
  5. Step 5: Solve for x
    x = 101,008,676,406.05/346,963.68
  6. Step 6: Final answer
    x = 291,121.76

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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.