Home / 208,009,828.70-312,014,743.05-147,543,652.70

Finding the Fourth Proportional to 208,009,828.70, 312,014,743.05 and 147,543,652.70

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Solution

The fourth proportional to 208,009,828.70, 312,014,743.05 and 147,543,652.70 is: 221,315,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,828.70 : 312,014,743.05 = 147,543,652.70 : x
  2. Step 2: Convert to fraction form
    208,009,828.70/312,014,743.05 = 147,543,652.70/x
  3. Step 3: Cross multiply
    208,009,828.70x = 312,014,743.05 × 147,543,652.70
  4. Step 4: Simplify right side
    208,009,828.70x = 46,035,794,885,848,936
  5. Step 5: Solve for x
    x = 46,035,794,885,848,936/208,009,828.70
  6. Step 6: Final answer
    x = 221,315,479.05

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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.