Home / 405,938.20-608,907.30-125,541.40

Finding the Fourth Proportional to 405,938.20, 608,907.30 and 125,541.40

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Solution

The fourth proportional to 405,938.20, 608,907.30 and 125,541.40 is: 188,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,938.20 : 608,907.30 = 125,541.40 : x
  2. Step 2: Convert to fraction form
    405,938.20/608,907.30 = 125,541.40/x
  3. Step 3: Cross multiply
    405,938.20x = 608,907.30 × 125,541.40
  4. Step 4: Simplify right side
    405,938.20x = 76,443,074,912.22
  5. Step 5: Solve for x
    x = 76,443,074,912.22/405,938.20
  6. Step 6: Final answer
    x = 188,312.10

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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.