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Finding the Fourth Proportional to 375,881.82, 518,215.12 and 298,613.89

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Solution

The fourth proportional to 375,881.82, 518,215.12 and 298,613.89 is: 411,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,881.82 : 518,215.12 = 298,613.89 : x
  2. Step 2: Convert to fraction form
    375,881.82/518,215.12 = 298,613.89/x
  3. Step 3: Cross multiply
    375,881.82x = 518,215.12 × 298,613.89
  4. Step 4: Simplify right side
    375,881.82x = 154,746,232,741.25
  5. Step 5: Solve for x
    x = 154,746,232,741.25/375,881.82
  6. Step 6: Final answer
    x = 411,688.53

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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.