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Finding the Fourth Proportional to 298,504.80, 447,368.40 and 120,866.40

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Solution

The fourth proportional to 298,504.80, 447,368.40 and 120,866.40 is: 181,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,504.80 : 447,368.40 = 120,866.40 : x
  2. Step 2: Convert to fraction form
    298,504.80/447,368.40 = 120,866.40/x
  3. Step 3: Cross multiply
    298,504.80x = 447,368.40 × 120,866.40
  4. Step 4: Simplify right side
    298,504.80x = 54,071,807,981.76
  5. Step 5: Solve for x
    x = 54,071,807,981.76/298,504.80
  6. Step 6: Final answer
    x = 181,142.17

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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.