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Finding the Fourth Proportional to 328,225.20, 492,337.80 and 216,056.40

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Solution

The fourth proportional to 328,225.20, 492,337.80 and 216,056.40 is: 324,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,225.20 : 492,337.80 = 216,056.40 : x
  2. Step 2: Convert to fraction form
    328,225.20/492,337.80 = 216,056.40/x
  3. Step 3: Cross multiply
    328,225.20x = 492,337.80 × 216,056.40
  4. Step 4: Simplify right side
    328,225.20x = 106,372,732,651.92
  5. Step 5: Solve for x
    x = 106,372,732,651.92/328,225.20
  6. Step 6: Final answer
    x = 324,084.60

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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.