Home / 289,006.14-433,465.40-78,660.48

Finding the Fourth Proportional to 289,006.14, 433,465.40 and 78,660.48

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Solution

The fourth proportional to 289,006.14, 433,465.40 and 78,660.48 is: 117,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,006.14 : 433,465.40 = 78,660.48 : x
  2. Step 2: Convert to fraction form
    289,006.14/433,465.40 = 78,660.48/x
  3. Step 3: Cross multiply
    289,006.14x = 433,465.40 × 78,660.48
  4. Step 4: Simplify right side
    289,006.14x = 34,096,596,427.39
  5. Step 5: Solve for x
    x = 34,096,596,427.39/289,006.14
  6. Step 6: Final answer
    x = 117,978.80

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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.