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Finding the Fourth Proportional to 328,823.60, 492,700.80 and 297,330.80

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Solution

The fourth proportional to 328,823.60, 492,700.80 and 297,330.80 is: 445,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,823.60 : 492,700.80 = 297,330.80 : x
  2. Step 2: Convert to fraction form
    328,823.60/492,700.80 = 297,330.80/x
  3. Step 3: Cross multiply
    328,823.60x = 492,700.80 × 297,330.80
  4. Step 4: Simplify right side
    328,823.60x = 146,495,123,024.64
  5. Step 5: Solve for x
    x = 146,495,123,024.64/328,823.60
  6. Step 6: Final answer
    x = 445,512.80

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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.