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Finding the Fourth Proportional to 346,694.20, 520,041.30 and 84,038.20

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Solution

The fourth proportional to 346,694.20, 520,041.30 and 84,038.20 is: 126,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,694.20 : 520,041.30 = 84,038.20 : x
  2. Step 2: Convert to fraction form
    346,694.20/520,041.30 = 84,038.20/x
  3. Step 3: Cross multiply
    346,694.20x = 520,041.30 × 84,038.20
  4. Step 4: Simplify right side
    346,694.20x = 43,703,334,777.66
  5. Step 5: Solve for x
    x = 43,703,334,777.66/346,694.20
  6. Step 6: Final answer
    x = 126,057.30

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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.