Home / 279,939,830.90-419,909,746.35-164,865,139.70

Finding the Fourth Proportional to 279,939,830.90, 419,909,746.35 and 164,865,139.70

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Solution

The fourth proportional to 279,939,830.90, 419,909,746.35 and 164,865,139.70 is: 247,297,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939,830.90 : 419,909,746.35 = 164,865,139.70 : x
  2. Step 2: Convert to fraction form
    279,939,830.90/419,909,746.35 = 164,865,139.70/x
  3. Step 3: Cross multiply
    279,939,830.90x = 419,909,746.35 × 164,865,139.70
  4. Step 4: Simplify right side
    279,939,830.90x = 69,228,478,993,384,312
  5. Step 5: Solve for x
    x = 69,228,478,993,384,312/279,939,830.90
  6. Step 6: Final answer
    x = 247,297,709.55

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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.