Home / 208,009,820.70-312,014,731.05-147,543,644.70

Finding the Fourth Proportional to 208,009,820.70, 312,014,731.05 and 147,543,644.70

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Solution

The fourth proportional to 208,009,820.70, 312,014,731.05 and 147,543,644.70 is: 221,315,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,820.70 : 312,014,731.05 = 147,543,644.70 : x
  2. Step 2: Convert to fraction form
    208,009,820.70/312,014,731.05 = 147,543,644.70/x
  3. Step 3: Cross multiply
    208,009,820.70x = 312,014,731.05 × 147,543,644.70
  4. Step 4: Simplify right side
    208,009,820.70x = 46,035,790,619,207,256
  5. Step 5: Solve for x
    x = 46,035,790,619,207,256/208,009,820.70
  6. Step 6: Final answer
    x = 221,315,467.05

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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.