Home / 393,390.12-590,172.93-112,885.50

Finding the Fourth Proportional to 393,390.12, 590,172.93 and 112,885.50

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Solution

The fourth proportional to 393,390.12, 590,172.93 and 112,885.50 is: 169,353.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,390.12 : 590,172.93 = 112,885.50 : x
  2. Step 2: Convert to fraction form
    393,390.12/590,172.93 = 112,885.50/x
  3. Step 3: Cross multiply
    393,390.12x = 590,172.93 × 112,885.50
  4. Step 4: Simplify right side
    393,390.12x = 66,621,966,289.52
  5. Step 5: Solve for x
    x = 66,621,966,289.52/393,390.12
  6. Step 6: Final answer
    x = 169,353.43

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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.