Home / 209,511,017.84-289,147,931.52-115,434,821.72

Finding the Fourth Proportional to 209,511,017.84, 289,147,931.52 and 115,434,821.72

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Solution

The fourth proportional to 209,511,017.84, 289,147,931.52 and 115,434,821.72 is: 159,312,575.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,511,017.84 : 289,147,931.52 = 115,434,821.72 : x
  2. Step 2: Convert to fraction form
    209,511,017.84/289,147,931.52 = 115,434,821.72/x
  3. Step 3: Cross multiply
    209,511,017.84x = 289,147,931.52 × 115,434,821.72
  4. Step 4: Simplify right side
    209,511,017.84x = 33,377,739,925,717,968
  5. Step 5: Solve for x
    x = 33,377,739,925,717,968/209,511,017.84
  6. Step 6: Final answer
    x = 159,312,575.87

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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.