Home / 405,375,132.90-607,905,495.96-139,430,277.32

Finding the Fourth Proportional to 405,375,132.90, 607,905,495.96 and 139,430,277.32

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Solution

The fourth proportional to 405,375,132.90, 607,905,495.96 and 139,430,277.32 is: 209,091,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,375,132.90 : 607,905,495.96 = 139,430,277.32 : x
  2. Step 2: Convert to fraction form
    405,375,132.90/607,905,495.96 = 139,430,277.32/x
  3. Step 3: Cross multiply
    405,375,132.90x = 607,905,495.96 × 139,430,277.32
  4. Step 4: Simplify right side
    405,375,132.90x = 84,760,431,886,054,944
  5. Step 5: Solve for x
    x = 84,760,431,886,054,944/405,375,132.90
  6. Step 6: Final answer
    x = 209,091,345.29

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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.