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Finding the Fourth Proportional to 331,428, 457,370.64 and 180,525

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Solution

The fourth proportional to 331,428, 457,370.64 and 180,525 is: 249,124.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,428 : 457,370.64 = 180,525 : x
  2. Step 2: Convert to fraction form
    331,428/457,370.64 = 180,525/x
  3. Step 3: Cross multiply
    331,428x = 457,370.64 × 180,525
  4. Step 4: Simplify right side
    331,428x = 82,566,834,786
  5. Step 5: Solve for x
    x = 82,566,834,786/331,428
  6. Step 6: Final answer
    x = 249,124.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.