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Finding the Fourth Proportional to 405,000.90, 607,501.35 and 124,481.70

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Solution

The fourth proportional to 405,000.90, 607,501.35 and 124,481.70 is: 186,722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,000.90 : 607,501.35 = 124,481.70 : x
  2. Step 2: Convert to fraction form
    405,000.90/607,501.35 = 124,481.70/x
  3. Step 3: Cross multiply
    405,000.90x = 607,501.35 × 124,481.70
  4. Step 4: Simplify right side
    405,000.90x = 75,622,800,800.30
  5. Step 5: Solve for x
    x = 75,622,800,800.30/405,000.90
  6. Step 6: Final answer
    x = 186,722.55

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1.5x scale

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.