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Finding the Fourth Proportional to 261,970.00, 392,954.48 and 72,429.88

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Solution

The fourth proportional to 261,970.00, 392,954.48 and 72,429.88 is: 108,644.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,970.00 : 392,954.48 = 72,429.88 : x
  2. Step 2: Convert to fraction form
    261,970.00/392,954.48 = 72,429.88/x
  3. Step 3: Cross multiply
    261,970.00x = 392,954.48 × 72,429.88
  4. Step 4: Simplify right side
    261,970.00x = 28,461,643,504.94
  5. Step 5: Solve for x
    x = 28,461,643,504.94/261,970.00
  6. Step 6: Final answer
    x = 108,644.67

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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.