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Finding the Fourth Proportional to 291,040.17, 436,841.81 and 210,070.68

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Solution

The fourth proportional to 291,040.17, 436,841.81 and 210,070.68 is: 315,309.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,040.17 : 436,841.81 = 210,070.68 : x
  2. Step 2: Convert to fraction form
    291,040.17/436,841.81 = 210,070.68/x
  3. Step 3: Cross multiply
    291,040.17x = 436,841.81 × 210,070.68
  4. Step 4: Simplify right side
    291,040.17x = 91,767,655,028.78
  5. Step 5: Solve for x
    x = 91,767,655,028.78/291,040.17
  6. Step 6: Final answer
    x = 315,309.24

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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.