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Finding the Fourth Proportional to 342,939.32, 514,409.04 and 143,150.72

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Solution

The fourth proportional to 342,939.32, 514,409.04 and 143,150.72 is: 214,726.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,939.32 : 514,409.04 = 143,150.72 : x
  2. Step 2: Convert to fraction form
    342,939.32/514,409.04 = 143,150.72/x
  3. Step 3: Cross multiply
    342,939.32x = 514,409.04 × 143,150.72
  4. Step 4: Simplify right side
    342,939.32x = 73,638,024,450.51
  5. Step 5: Solve for x
    x = 73,638,024,450.51/342,939.32
  6. Step 6: Final answer
    x = 214,726.11

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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.