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Finding the Fourth Proportional to 447,429.99, 670,816.92 and 210,643.50

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Solution

The fourth proportional to 447,429.99, 670,816.92 and 210,643.50 is: 315,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,429.99 : 670,816.92 = 210,643.50 : x
  2. Step 2: Convert to fraction form
    447,429.99/670,816.92 = 210,643.50/x
  3. Step 3: Cross multiply
    447,429.99x = 670,816.92 × 210,643.50
  4. Step 4: Simplify right side
    447,429.99x = 141,303,223,888.02
  5. Step 5: Solve for x
    x = 141,303,223,888.02/447,429.99
  6. Step 6: Final answer
    x = 315,810.80

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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.