Home / 259,640,135.60-389,460,203.40-77,887,313.60

Finding the Fourth Proportional to 259,640,135.60, 389,460,203.40 and 77,887,313.60

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Solution

The fourth proportional to 259,640,135.60, 389,460,203.40 and 77,887,313.60 is: 116,830,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,640,135.60 : 389,460,203.40 = 77,887,313.60 : x
  2. Step 2: Convert to fraction form
    259,640,135.60/389,460,203.40 = 77,887,313.60/x
  3. Step 3: Cross multiply
    259,640,135.60x = 389,460,203.40 × 77,887,313.60
  4. Step 4: Simplify right side
    259,640,135.60x = 30,334,008,996,935,584
  5. Step 5: Solve for x
    x = 30,334,008,996,935,584/259,640,135.60
  6. Step 6: Final answer
    x = 116,830,970.40

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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.