Home / 209,953,298.80-314,929,948.20-123,647,280.40

Finding the Fourth Proportional to 209,953,298.80, 314,929,948.20 and 123,647,280.40

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Solution

The fourth proportional to 209,953,298.80, 314,929,948.20 and 123,647,280.40 is: 185,470,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,298.80 : 314,929,948.20 = 123,647,280.40 : x
  2. Step 2: Convert to fraction form
    209,953,298.80/314,929,948.20 = 123,647,280.40/x
  3. Step 3: Cross multiply
    209,953,298.80x = 314,929,948.20 × 123,647,280.40
  4. Step 4: Simplify right side
    209,953,298.80x = 38,940,231,611,442,872
  5. Step 5: Solve for x
    x = 38,940,231,611,442,872/209,953,298.80
  6. Step 6: Final answer
    x = 185,470,920.60

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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.