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Finding the Fourth Proportional to 375,978,591.48, 518,854,636.62 and 208,726,162.68

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Solution

The fourth proportional to 375,978,591.48, 518,854,636.62 and 208,726,162.68 is: 288,044,425.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,978,591.48 : 518,854,636.62 = 208,726,162.68 : x
  2. Step 2: Convert to fraction form
    375,978,591.48/518,854,636.62 = 208,726,162.68/x
  3. Step 3: Cross multiply
    375,978,591.48x = 518,854,636.62 × 208,726,162.68
  4. Step 4: Simplify right side
    375,978,591.48x = 108,298,537,290,418,416
  5. Step 5: Solve for x
    x = 108,298,537,290,418,416/375,978,591.48
  6. Step 6: Final answer
    x = 288,044,425.25

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