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Finding the Fourth Proportional to 660,123.58, 990,268.74 and 186,809.10

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Solution

The fourth proportional to 660,123.58, 990,268.74 and 186,809.10 is: 280,237.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,123.58 : 990,268.74 = 186,809.10 : x
  2. Step 2: Convert to fraction form
    660,123.58/990,268.74 = 186,809.10/x
  3. Step 3: Cross multiply
    660,123.58x = 990,268.74 × 186,809.10
  4. Step 4: Simplify right side
    660,123.58x = 184,991,212,077.53
  5. Step 5: Solve for x
    x = 184,991,212,077.53/660,123.58
  6. Step 6: Final answer
    x = 280,237.24

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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.