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Finding the Fourth Proportional to 271,898.56, 407,428.66 and 145,555.57

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Solution

The fourth proportional to 271,898.56, 407,428.66 and 145,555.57 is: 218,108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,898.56 : 407,428.66 = 145,555.57 : x
  2. Step 2: Convert to fraction form
    271,898.56/407,428.66 = 145,555.57/x
  3. Step 3: Cross multiply
    271,898.56x = 407,428.66 × 145,555.57
  4. Step 4: Simplify right side
    271,898.56x = 59,303,508,075.72
  5. Step 5: Solve for x
    x = 59,303,508,075.72/271,898.56
  6. Step 6: Final answer
    x = 218,108.95

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1.5x scale

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.