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Finding the Fourth Proportional to 660,065.10, 990,000.45 and 186,798.30

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Solution

The fourth proportional to 660,065.10, 990,000.45 and 186,798.30 is: 280,169.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,065.10 : 990,000.45 = 186,798.30 : x
  2. Step 2: Convert to fraction form
    660,065.10/990,000.45 = 186,798.30/x
  3. Step 3: Cross multiply
    660,065.10x = 990,000.45 × 186,798.30
  4. Step 4: Simplify right side
    660,065.10x = 184,930,401,059.24
  5. Step 5: Solve for x
    x = 184,930,401,059.24/660,065.10
  6. Step 6: Final answer
    x = 280,169.94

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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.