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Finding the Fourth Proportional to 328,998.40, 493,497.60 and 189,030.40

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Solution

The fourth proportional to 328,998.40, 493,497.60 and 189,030.40 is: 283,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,998.40 : 493,497.60 = 189,030.40 : x
  2. Step 2: Convert to fraction form
    328,998.40/493,497.60 = 189,030.40/x
  3. Step 3: Cross multiply
    328,998.40x = 493,497.60 × 189,030.40
  4. Step 4: Simplify right side
    328,998.40x = 93,286,048,727.04
  5. Step 5: Solve for x
    x = 93,286,048,727.04/328,998.40
  6. Step 6: Final answer
    x = 283,545.60

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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.