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Finding the Fourth Proportional to 340,579.80, 509,885.55 and 330,738.30

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Solution

The fourth proportional to 340,579.80, 509,885.55 and 330,738.30 is: 495,151.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,579.80 : 509,885.55 = 330,738.30 : x
  2. Step 2: Convert to fraction form
    340,579.80/509,885.55 = 330,738.30/x
  3. Step 3: Cross multiply
    340,579.80x = 509,885.55 × 330,738.30
  4. Step 4: Simplify right side
    340,579.80x = 168,638,680,001.57
  5. Step 5: Solve for x
    x = 168,638,680,001.57/340,579.80
  6. Step 6: Final answer
    x = 495,151.74

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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.