Home / 428,946.04-643,000.68-204,246.10

Finding the Fourth Proportional to 428,946.04, 643,000.68 and 204,246.10

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Solution

The fourth proportional to 428,946.04, 643,000.68 and 204,246.10 is: 306,169.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,946.04 : 643,000.68 = 204,246.10 : x
  2. Step 2: Convert to fraction form
    428,946.04/643,000.68 = 204,246.10/x
  3. Step 3: Cross multiply
    428,946.04x = 643,000.68 × 204,246.10
  4. Step 4: Simplify right side
    428,946.04x = 131,330,381,187.35
  5. Step 5: Solve for x
    x = 131,330,381,187.35/428,946.04
  6. Step 6: Final answer
    x = 306,169.94

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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.