Home / 258,748.61-387,991.64-118,386.95

Finding the Fourth Proportional to 258,748.61, 387,991.64 and 118,386.95

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Solution

The fourth proportional to 258,748.61, 387,991.64 and 118,386.95 is: 177,520.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,748.61 : 387,991.64 = 118,386.95 : x
  2. Step 2: Convert to fraction form
    258,748.61/387,991.64 = 118,386.95/x
  3. Step 3: Cross multiply
    258,748.61x = 387,991.64 × 118,386.95
  4. Step 4: Simplify right side
    258,748.61x = 45,933,144,353.21
  5. Step 5: Solve for x
    x = 45,933,144,353.21/258,748.61
  6. Step 6: Final answer
    x = 177,520.36

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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.