Home / 256,721.92-384,922.50-98,762.20

Finding the Fourth Proportional to 256,721.92, 384,922.50 and 98,762.20

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Solution

The fourth proportional to 256,721.92, 384,922.50 and 98,762.20 is: 148,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,721.92 : 384,922.50 = 98,762.20 : x
  2. Step 2: Convert to fraction form
    256,721.92/384,922.50 = 98,762.20/x
  3. Step 3: Cross multiply
    256,721.92x = 384,922.50 × 98,762.20
  4. Step 4: Simplify right side
    256,721.92x = 38,015,792,929.50
  5. Step 5: Solve for x
    x = 38,015,792,929.50/256,721.92
  6. Step 6: Final answer
    x = 148,081.60

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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.