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Finding the Fourth Proportional to 291,058.09, 436,587.25 and 130,947.04

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Solution

The fourth proportional to 291,058.09, 436,587.25 and 130,947.04 is: 196,420.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,058.09 : 436,587.25 = 130,947.04 : x
  2. Step 2: Convert to fraction form
    291,058.09/436,587.25 = 130,947.04/x
  3. Step 3: Cross multiply
    291,058.09x = 436,587.25 × 130,947.04
  4. Step 4: Simplify right side
    291,058.09x = 57,169,808,089.24
  5. Step 5: Solve for x
    x = 57,169,808,089.24/291,058.09
  6. Step 6: Final answer
    x = 196,420.61

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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.