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Finding the Fourth Proportional to 262,610, 393,915.48 and 65,618

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Solution

The fourth proportional to 262,610, 393,915.48 and 65,618 is: 98,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,610 : 393,915.48 = 65,618 : x
  2. Step 2: Convert to fraction form
    262,610/393,915.48 = 65,618/x
  3. Step 3: Cross multiply
    262,610x = 393,915.48 × 65,618
  4. Step 4: Simplify right side
    262,610x = 25,847,945,966.64
  5. Step 5: Solve for x
    x = 25,847,945,966.64/262,610
  6. Step 6: Final answer
    x = 98,427.12

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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.