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Finding the Fourth Proportional to 305,477.08, 421,560.72 and 169,511.56

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Solution

The fourth proportional to 305,477.08, 421,560.72 and 169,511.56 is: 233,927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,477.08 : 421,560.72 = 169,511.56 : x
  2. Step 2: Convert to fraction form
    305,477.08/421,560.72 = 169,511.56/x
  3. Step 3: Cross multiply
    305,477.08x = 421,560.72 × 169,511.56
  4. Step 4: Simplify right side
    305,477.08x = 71,459,415,281.92
  5. Step 5: Solve for x
    x = 71,459,415,281.92/305,477.08
  6. Step 6: Final answer
    x = 233,927.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.