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Finding the Fourth Proportional to 330,679.40, 456,317.14 and 185,477.20

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Solution

The fourth proportional to 330,679.40, 456,317.14 and 185,477.20 is: 255,947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,679.40 : 456,317.14 = 185,477.20 : x
  2. Step 2: Convert to fraction form
    330,679.40/456,317.14 = 185,477.20/x
  3. Step 3: Cross multiply
    330,679.40x = 456,317.14 × 185,477.20
  4. Step 4: Simplify right side
    330,679.40x = 84,636,425,439.21
  5. Step 5: Solve for x
    x = 84,636,425,439.21/330,679.40
  6. Step 6: Final answer
    x = 255,947.08

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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.