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Finding the Fourth Proportional to 291,017.36, 436,379.30 and 88,574.64

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Solution

The fourth proportional to 291,017.36, 436,379.30 and 88,574.64 is: 132,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,017.36 : 436,379.30 = 88,574.64 : x
  2. Step 2: Convert to fraction form
    291,017.36/436,379.30 = 88,574.64/x
  3. Step 3: Cross multiply
    291,017.36x = 436,379.30 × 88,574.64
  4. Step 4: Simplify right side
    291,017.36x = 38,652,139,400.95
  5. Step 5: Solve for x
    x = 38,652,139,400.95/291,017.36
  6. Step 6: Final answer
    x = 132,817.30

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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.