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Finding the Fourth Proportional to 661,490.01, 992,327.76 and 212,105.25

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Solution

The fourth proportional to 661,490.01, 992,327.76 and 212,105.25 is: 318,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,490.01 : 992,327.76 = 212,105.25 : x
  2. Step 2: Convert to fraction form
    661,490.01/992,327.76 = 212,105.25/x
  3. Step 3: Cross multiply
    661,490.01x = 992,327.76 × 212,105.25
  4. Step 4: Simplify right side
    661,490.01x = 210,477,927,616.74
  5. Step 5: Solve for x
    x = 210,477,927,616.74/661,490.01
  6. Step 6: Final answer
    x = 318,187.61

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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.