Home / 318,890,814.71-440,069,320.73-172,213,098.71

Finding the Fourth Proportional to 318,890,814.71, 440,069,320.73 and 172,213,098.71

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Solution

The fourth proportional to 318,890,814.71, 440,069,320.73 and 172,213,098.71 is: 237,654,074.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,890,814.71 : 440,069,320.73 = 172,213,098.71 : x
  2. Step 2: Convert to fraction form
    318,890,814.71/440,069,320.73 = 172,213,098.71/x
  3. Step 3: Cross multiply
    318,890,814.71x = 440,069,320.73 × 172,213,098.71
  4. Step 4: Simplify right side
    318,890,814.71x = 75,785,701,369,257,088
  5. Step 5: Solve for x
    x = 75,785,701,369,257,088/318,890,814.71
  6. Step 6: Final answer
    x = 237,654,074.29

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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.