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Finding the Fourth Proportional to 312,807.40, 469,839.45 and 186,694.04

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Solution

The fourth proportional to 312,807.40, 469,839.45 and 186,694.04 is: 280,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,807.40 : 469,839.45 = 186,694.04 : x
  2. Step 2: Convert to fraction form
    312,807.40/469,839.45 = 186,694.04/x
  3. Step 3: Cross multiply
    312,807.40x = 469,839.45 × 186,694.04
  4. Step 4: Simplify right side
    312,807.40x = 87,716,225,071.88
  5. Step 5: Solve for x
    x = 87,716,225,071.88/312,807.40
  6. Step 6: Final answer
    x = 280,416.08

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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.