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Finding the Fourth Proportional to 239,348.40, 358,936.20 and 120,980.40

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Solution

The fourth proportional to 239,348.40, 358,936.20 and 120,980.40 is: 181,426.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,348.40 : 358,936.20 = 120,980.40 : x
  2. Step 2: Convert to fraction form
    239,348.40/358,936.20 = 120,980.40/x
  3. Step 3: Cross multiply
    239,348.40x = 358,936.20 × 120,980.40
  4. Step 4: Simplify right side
    239,348.40x = 43,424,245,050.48
  5. Step 5: Solve for x
    x = 43,424,245,050.48/239,348.40
  6. Step 6: Final answer
    x = 181,426.93

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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.