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Finding the Fourth Proportional to 239,835, 331,015.62 and 143,045.07

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Solution

The fourth proportional to 239,835, 331,015.62 and 143,045.07 is: 197,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,835 : 331,015.62 = 143,045.07 : x
  2. Step 2: Convert to fraction form
    239,835/331,015.62 = 143,045.07/x
  3. Step 3: Cross multiply
    239,835x = 331,015.62 × 143,045.07
  4. Step 4: Simplify right side
    239,835x = 47,350,152,533.99
  5. Step 5: Solve for x
    x = 47,350,152,533.99/239,835
  6. Step 6: Final answer
    x = 197,428.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.