Home / 399,243,658.65-550,986,072.38-229,749,851.91

Finding the Fourth Proportional to 399,243,658.65, 550,986,072.38 and 229,749,851.91

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Solution

The fourth proportional to 399,243,658.65, 550,986,072.38 and 229,749,851.91 is: 317,071,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,243,658.65 : 550,986,072.38 = 229,749,851.91 : x
  2. Step 2: Convert to fraction form
    399,243,658.65/550,986,072.38 = 229,749,851.91/x
  3. Step 3: Cross multiply
    399,243,658.65x = 550,986,072.38 × 229,749,851.91
  4. Step 4: Simplify right side
    399,243,658.65x = 126,588,968,533,777,536
  5. Step 5: Solve for x
    x = 126,588,968,533,777,536/399,243,658.65
  6. Step 6: Final answer
    x = 317,071,957.92

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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.