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Finding the Fourth Proportional to 375,978,590.48, 518,854,635.24 and 208,726,161.68

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Solution

The fourth proportional to 375,978,590.48, 518,854,635.24 and 208,726,161.68 is: 288,044,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,978,590.48 : 518,854,635.24 = 208,726,161.68 : x
  2. Step 2: Convert to fraction form
    375,978,590.48/518,854,635.24 = 208,726,161.68/x
  3. Step 3: Cross multiply
    375,978,590.48x = 518,854,635.24 × 208,726,161.68
  4. Step 4: Simplify right side
    375,978,590.48x = 108,298,536,483,521,664
  5. Step 5: Solve for x
    x = 108,298,536,483,521,664/375,978,590.48
  6. Step 6: Final answer
    x = 288,044,423.87

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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.