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Finding the Fourth Proportional to 384,878.77, 531,123.33 and 212,792.29

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Solution

The fourth proportional to 384,878.77, 531,123.33 and 212,792.29 is: 293,648.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,878.77 : 531,123.33 = 212,792.29 : x
  2. Step 2: Convert to fraction form
    384,878.77/531,123.33 = 212,792.29/x
  3. Step 3: Cross multiply
    384,878.77x = 531,123.33 × 212,792.29
  4. Step 4: Simplify right side
    384,878.77x = 113,018,949,663.13
  5. Step 5: Solve for x
    x = 113,018,949,663.13/384,878.77
  6. Step 6: Final answer
    x = 293,648.18

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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.