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Finding the Fourth Proportional to 615,814.40, 923,491.20 and 216,300.80

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Solution

The fourth proportional to 615,814.40, 923,491.20 and 216,300.80 is: 324,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,814.40 : 923,491.20 = 216,300.80 : x
  2. Step 2: Convert to fraction form
    615,814.40/923,491.20 = 216,300.80/x
  3. Step 3: Cross multiply
    615,814.40x = 923,491.20 × 216,300.80
  4. Step 4: Simplify right side
    615,814.40x = 199,751,885,352.96
  5. Step 5: Solve for x
    x = 199,751,885,352.96/615,814.40
  6. Step 6: Final answer
    x = 324,370.27

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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.