Home / 258,209.36-387,376.32-89,705.24

Finding the Fourth Proportional to 258,209.36, 387,376.32 and 89,705.24

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Solution

The fourth proportional to 258,209.36, 387,376.32 and 89,705.24 is: 134,579.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,209.36 : 387,376.32 = 89,705.24 : x
  2. Step 2: Convert to fraction form
    258,209.36/387,376.32 = 89,705.24/x
  3. Step 3: Cross multiply
    258,209.36x = 387,376.32 × 89,705.24
  4. Step 4: Simplify right side
    258,209.36x = 34,749,685,755.92
  5. Step 5: Solve for x
    x = 34,749,685,755.92/258,209.36
  6. Step 6: Final answer
    x = 134,579.50

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1.5x scale

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.