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Finding the Fourth Proportional to 355,498.80, 533,248.20 and 345,657.30

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Solution

The fourth proportional to 355,498.80, 533,248.20 and 345,657.30 is: 518,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,498.80 : 533,248.20 = 345,657.30 : x
  2. Step 2: Convert to fraction form
    355,498.80/533,248.20 = 345,657.30/x
  3. Step 3: Cross multiply
    355,498.80x = 533,248.20 × 345,657.30
  4. Step 4: Simplify right side
    355,498.80x = 184,321,133,041.86
  5. Step 5: Solve for x
    x = 184,321,133,041.86/355,498.80
  6. Step 6: Final answer
    x = 518,485.95

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Similar ratio
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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.