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Finding the Fourth Proportional to 661,820.40, 992,730.60 and 188,499.60

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Solution

The fourth proportional to 661,820.40, 992,730.60 and 188,499.60 is: 282,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,820.40 : 992,730.60 = 188,499.60 : x
  2. Step 2: Convert to fraction form
    661,820.40/992,730.60 = 188,499.60/x
  3. Step 3: Cross multiply
    661,820.40x = 992,730.60 × 188,499.60
  4. Step 4: Simplify right side
    661,820.40x = 187,129,321,007.76
  5. Step 5: Solve for x
    x = 187,129,321,007.76/661,820.40
  6. Step 6: Final answer
    x = 282,749.40

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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.