Home / 399,285.04-551,010.50-217,996.96

Finding the Fourth Proportional to 399,285.04, 551,010.50 and 217,996.96

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Solution

The fourth proportional to 399,285.04, 551,010.50 and 217,996.96 is: 300,834.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,285.04 : 551,010.50 = 217,996.96 : x
  2. Step 2: Convert to fraction form
    399,285.04/551,010.50 = 217,996.96/x
  3. Step 3: Cross multiply
    399,285.04x = 551,010.50 × 217,996.96
  4. Step 4: Simplify right side
    399,285.04x = 120,118,613,928.08
  5. Step 5: Solve for x
    x = 120,118,613,928.08/399,285.04
  6. Step 6: Final answer
    x = 300,834.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.