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Finding the Fourth Proportional to 615,816.40, 923,494.20 and 216,302.80

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Solution

The fourth proportional to 615,816.40, 923,494.20 and 216,302.80 is: 324,373.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,816.40 : 923,494.20 = 216,302.80 : x
  2. Step 2: Convert to fraction form
    615,816.40/923,494.20 = 216,302.80/x
  3. Step 3: Cross multiply
    615,816.40x = 923,494.20 × 216,302.80
  4. Step 4: Simplify right side
    615,816.40x = 199,754,381,243.76
  5. Step 5: Solve for x
    x = 199,754,381,243.76/615,816.40
  6. Step 6: Final answer
    x = 324,373.27

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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.