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Finding the Fourth Proportional to 328,007.60, 492,011.40 and 298,977.20

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Solution

The fourth proportional to 328,007.60, 492,011.40 and 298,977.20 is: 448,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,007.60 : 492,011.40 = 298,977.20 : x
  2. Step 2: Convert to fraction form
    328,007.60/492,011.40 = 298,977.20/x
  3. Step 3: Cross multiply
    328,007.60x = 492,011.40 × 298,977.20
  4. Step 4: Simplify right side
    328,007.60x = 147,100,190,740.08
  5. Step 5: Solve for x
    x = 147,100,190,740.08/328,007.60
  6. Step 6: Final answer
    x = 448,465.80

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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.