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Finding the Fourth Proportional to 329,095.50, 493,643.25 and 79,777.50

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Solution

The fourth proportional to 329,095.50, 493,643.25 and 79,777.50 is: 119,666.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,095.50 : 493,643.25 = 79,777.50 : x
  2. Step 2: Convert to fraction form
    329,095.50/493,643.25 = 79,777.50/x
  3. Step 3: Cross multiply
    329,095.50x = 493,643.25 × 79,777.50
  4. Step 4: Simplify right side
    329,095.50x = 39,381,624,376.88
  5. Step 5: Solve for x
    x = 39,381,624,376.88/329,095.50
  6. Step 6: Final answer
    x = 119,666.25

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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.