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Finding the Fourth Proportional to 328,009.60, 492,014.40 and 178,710.40

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Solution

The fourth proportional to 328,009.60, 492,014.40 and 178,710.40 is: 268,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,009.60 : 492,014.40 = 178,710.40 : x
  2. Step 2: Convert to fraction form
    328,009.60/492,014.40 = 178,710.40/x
  3. Step 3: Cross multiply
    328,009.60x = 492,014.40 × 178,710.40
  4. Step 4: Simplify right side
    328,009.60x = 87,928,090,229.76
  5. Step 5: Solve for x
    x = 87,928,090,229.76/328,009.60
  6. Step 6: Final answer
    x = 268,065.60

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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.