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Finding the Fourth Proportional to 286,389.96, 427,491.29 and 265,574.58

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Solution

The fourth proportional to 286,389.96, 427,491.29 and 265,574.58 is: 396,420.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,389.96 : 427,491.29 = 265,574.58 : x
  2. Step 2: Convert to fraction form
    286,389.96/427,491.29 = 265,574.58/x
  3. Step 3: Cross multiply
    286,389.96x = 427,491.29 × 265,574.58
  4. Step 4: Simplify right side
    286,389.96x = 113,530,818,467.54
  5. Step 5: Solve for x
    x = 113,530,818,467.54/286,389.96
  6. Step 6: Final answer
    x = 396,420.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.