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Finding the Fourth Proportional to 452,613.60, 679,018.32 and 172,136.16

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Solution

The fourth proportional to 452,613.60, 679,018.32 and 172,136.16 is: 258,241.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,613.60 : 679,018.32 = 172,136.16 : x
  2. Step 2: Convert to fraction form
    452,613.60/679,018.32 = 172,136.16/x
  3. Step 3: Cross multiply
    452,613.60x = 679,018.32 × 172,136.16
  4. Step 4: Simplify right side
    452,613.60x = 116,883,606,174.45
  5. Step 5: Solve for x
    x = 116,883,606,174.45/452,613.60
  6. Step 6: Final answer
    x = 258,241.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.