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Finding the Fourth Proportional to 437,859.40, 656,303.10 and 171,531.40

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Solution

The fourth proportional to 437,859.40, 656,303.10 and 171,531.40 is: 257,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,859.40 : 656,303.10 = 171,531.40 : x
  2. Step 2: Convert to fraction form
    437,859.40/656,303.10 = 171,531.40/x
  3. Step 3: Cross multiply
    437,859.40x = 656,303.10 × 171,531.40
  4. Step 4: Simplify right side
    437,859.40x = 112,576,589,567.34
  5. Step 5: Solve for x
    x = 112,576,589,567.34/437,859.40
  6. Step 6: Final answer
    x = 257,106.71

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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.