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Finding the Fourth Proportional to 456,412.70, 684,619.05 and 231,807.80

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Solution

The fourth proportional to 456,412.70, 684,619.05 and 231,807.80 is: 347,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,412.70 : 684,619.05 = 231,807.80 : x
  2. Step 2: Convert to fraction form
    456,412.70/684,619.05 = 231,807.80/x
  3. Step 3: Cross multiply
    456,412.70x = 684,619.05 × 231,807.80
  4. Step 4: Simplify right side
    456,412.70x = 158,700,035,818.59
  5. Step 5: Solve for x
    x = 158,700,035,818.59/456,412.70
  6. Step 6: Final answer
    x = 347,711.70

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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.