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Finding the Fourth Proportional to 248,752, 373,128 and 90,894.40

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Solution

The fourth proportional to 248,752, 373,128 and 90,894.40 is: 136,341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,752 : 373,128 = 90,894.40 : x
  2. Step 2: Convert to fraction form
    248,752/373,128 = 90,894.40/x
  3. Step 3: Cross multiply
    248,752x = 373,128 × 90,894.40
  4. Step 4: Simplify right side
    248,752x = 33,915,245,683.20
  5. Step 5: Solve for x
    x = 33,915,245,683.20/248,752
  6. Step 6: Final answer
    x = 136,341.60

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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.