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Finding the Fourth Proportional to 493,210.20, 680,630 and 266,855.72

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Solution

The fourth proportional to 493,210.20, 680,630 and 266,855.72 is: 368,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,210.20 : 680,630 = 266,855.72 : x
  2. Step 2: Convert to fraction form
    493,210.20/680,630 = 266,855.72/x
  3. Step 3: Cross multiply
    493,210.20x = 680,630 × 266,855.72
  4. Step 4: Simplify right side
    493,210.20x = 181,630,008,703.60
  5. Step 5: Solve for x
    x = 181,630,008,703.60/493,210.20
  6. Step 6: Final answer
    x = 368,260.85

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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.