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Finding the Fourth Proportional to 291,387.64, 437,483.90 and 201,218.72

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Solution

The fourth proportional to 291,387.64, 437,483.90 and 201,218.72 is: 302,105.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,387.64 : 437,483.90 = 201,218.72 : x
  2. Step 2: Convert to fraction form
    291,387.64/437,483.90 = 201,218.72/x
  3. Step 3: Cross multiply
    291,387.64x = 437,483.90 × 201,218.72
  4. Step 4: Simplify right side
    291,387.64x = 88,029,950,378.61
  5. Step 5: Solve for x
    x = 88,029,950,378.61/291,387.64
  6. Step 6: Final answer
    x = 302,105.99

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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.