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Finding the Fourth Proportional to 370,425.40, 555,638.70 and 89,942.64

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Solution

The fourth proportional to 370,425.40, 555,638.70 and 89,942.64 is: 134,914.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,425.40 : 555,638.70 = 89,942.64 : x
  2. Step 2: Convert to fraction form
    370,425.40/555,638.70 = 89,942.64/x
  3. Step 3: Cross multiply
    370,425.40x = 555,638.70 × 89,942.64
  4. Step 4: Simplify right side
    370,425.40x = 49,975,611,564.17
  5. Step 5: Solve for x
    x = 49,975,611,564.17/370,425.40
  6. Step 6: Final answer
    x = 134,914.11

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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.