Home / 405,621.70-608,432.55-272,911.30

Finding the Fourth Proportional to 405,621.70, 608,432.55 and 272,911.30

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Solution

The fourth proportional to 405,621.70, 608,432.55 and 272,911.30 is: 409,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,621.70 : 608,432.55 = 272,911.30 : x
  2. Step 2: Convert to fraction form
    405,621.70/608,432.55 = 272,911.30/x
  3. Step 3: Cross multiply
    405,621.70x = 608,432.55 × 272,911.30
  4. Step 4: Simplify right side
    405,621.70x = 166,048,118,182.82
  5. Step 5: Solve for x
    x = 166,048,118,182.82/405,621.70
  6. Step 6: Final answer
    x = 409,366.95

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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.