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Finding the Fourth Proportional to 662,490.09, 993,735.47 and 213,210.90

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Solution

The fourth proportional to 662,490.09, 993,735.47 and 213,210.90 is: 319,816.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,490.09 : 993,735.47 = 213,210.90 : x
  2. Step 2: Convert to fraction form
    662,490.09/993,735.47 = 213,210.90/x
  3. Step 3: Cross multiply
    662,490.09x = 993,735.47 × 213,210.90
  4. Step 4: Simplify right side
    662,490.09x = 211,875,234,453.65
  5. Step 5: Solve for x
    x = 211,875,234,453.65/662,490.09
  6. Step 6: Final answer
    x = 319,816.46

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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.