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Finding the Fourth Proportional to 342,546.30, 513,819.45 and 328,768.20

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Solution

The fourth proportional to 342,546.30, 513,819.45 and 328,768.20 is: 493,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,546.30 : 513,819.45 = 328,768.20 : x
  2. Step 2: Convert to fraction form
    342,546.30/513,819.45 = 328,768.20/x
  3. Step 3: Cross multiply
    342,546.30x = 513,819.45 × 328,768.20
  4. Step 4: Simplify right side
    342,546.30x = 168,927,495,701.49
  5. Step 5: Solve for x
    x = 168,927,495,701.49/342,546.30
  6. Step 6: Final answer
    x = 493,152.30

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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.