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Finding the Fourth Proportional to 346,709.20, 520,063.80 and 84,053.20

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Solution

The fourth proportional to 346,709.20, 520,063.80 and 84,053.20 is: 126,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,709.20 : 520,063.80 = 84,053.20 : x
  2. Step 2: Convert to fraction form
    346,709.20/520,063.80 = 84,053.20/x
  3. Step 3: Cross multiply
    346,709.20x = 520,063.80 × 84,053.20
  4. Step 4: Simplify right side
    346,709.20x = 43,713,026,594.16
  5. Step 5: Solve for x
    x = 43,713,026,594.16/346,709.20
  6. Step 6: Final answer
    x = 126,079.80

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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.