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Finding the Fourth Proportional to 660,284.63, 990,138.54 and 233,678.67

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Solution

The fourth proportional to 660,284.63, 990,138.54 and 233,678.67 is: 350,415.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,284.63 : 990,138.54 = 233,678.67 : x
  2. Step 2: Convert to fraction form
    660,284.63/990,138.54 = 233,678.67/x
  3. Step 3: Cross multiply
    660,284.63x = 990,138.54 × 233,678.67
  4. Step 4: Simplify right side
    660,284.63x = 231,374,257,986.22
  5. Step 5: Solve for x
    x = 231,374,257,986.22/660,284.63
  6. Step 6: Final answer
    x = 350,415.94

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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.