Home / 198,145,205.40-297,217,808.10-185,390,621.40

Finding the Fourth Proportional to 198,145,205.40, 297,217,808.10 and 185,390,621.40

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Solution

The fourth proportional to 198,145,205.40, 297,217,808.10 and 185,390,621.40 is: 278,085,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,145,205.40 : 297,217,808.10 = 185,390,621.40 : x
  2. Step 2: Convert to fraction form
    198,145,205.40/297,217,808.10 = 185,390,621.40/x
  3. Step 3: Cross multiply
    198,145,205.40x = 297,217,808.10 × 185,390,621.40
  4. Step 4: Simplify right side
    198,145,205.40x = 55,101,394,134,804,960
  5. Step 5: Solve for x
    x = 55,101,394,134,804,960/198,145,205.40
  6. Step 6: Final answer
    x = 278,085,932.10

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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.