Home / 289,040.40-433,366.20-131,187.60

Finding the Fourth Proportional to 289,040.40, 433,366.20 and 131,187.60

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Solution

The fourth proportional to 289,040.40, 433,366.20 and 131,187.60 is: 196,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,040.40 : 433,366.20 = 131,187.60 : x
  2. Step 2: Convert to fraction form
    289,040.40/433,366.20 = 131,187.60/x
  3. Step 3: Cross multiply
    289,040.40x = 433,366.20 × 131,187.60
  4. Step 4: Simplify right side
    289,040.40x = 56,852,271,699.12
  5. Step 5: Solve for x
    x = 56,852,271,699.12/289,040.40
  6. Step 6: Final answer
    x = 196,693.17

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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.