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Finding the Fourth Proportional to 328,513.60, 493,807.20 and 303,630.40

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Solution

The fourth proportional to 328,513.60, 493,807.20 and 303,630.40 is: 456,403.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,513.60 : 493,807.20 = 303,630.40 : x
  2. Step 2: Convert to fraction form
    328,513.60/493,807.20 = 303,630.40/x
  3. Step 3: Cross multiply
    328,513.60x = 493,807.20 × 303,630.40
  4. Step 4: Simplify right side
    328,513.60x = 149,934,877,658.88
  5. Step 5: Solve for x
    x = 149,934,877,658.88/328,513.60
  6. Step 6: Final answer
    x = 456,403.87

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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.