Home / 210,848.78-290,970.95-115,355.25

Finding the Fourth Proportional to 210,848.78, 290,970.95 and 115,355.25

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Solution

The fourth proportional to 210,848.78, 290,970.95 and 115,355.25 is: 159,190.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,848.78 : 290,970.95 = 115,355.25 : x
  2. Step 2: Convert to fraction form
    210,848.78/290,970.95 = 115,355.25/x
  3. Step 3: Cross multiply
    210,848.78x = 290,970.95 × 115,355.25
  4. Step 4: Simplify right side
    210,848.78x = 33,565,026,103.21
  5. Step 5: Solve for x
    x = 33,565,026,103.21/210,848.78
  6. Step 6: Final answer
    x = 159,190.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.