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Finding the Fourth Proportional to 312,774.39, 469,089.63 and 186,450.30

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Solution

The fourth proportional to 312,774.39, 469,089.63 and 186,450.30 is: 279,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,774.39 : 469,089.63 = 186,450.30 : x
  2. Step 2: Convert to fraction form
    312,774.39/469,089.63 = 186,450.30/x
  3. Step 3: Cross multiply
    312,774.39x = 469,089.63 × 186,450.30
  4. Step 4: Simplify right side
    312,774.39x = 87,461,902,240.39
  5. Step 5: Solve for x
    x = 87,461,902,240.39/312,774.39
  6. Step 6: Final answer
    x = 279,632.56

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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.