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Finding the Fourth Proportional to 261,622.08, 392,476.86 and 103,851.90

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Solution

The fourth proportional to 261,622.08, 392,476.86 and 103,851.90 is: 155,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,622.08 : 392,476.86 = 103,851.90 : x
  2. Step 2: Convert to fraction form
    261,622.08/392,476.86 = 103,851.90/x
  3. Step 3: Cross multiply
    261,622.08x = 392,476.86 × 103,851.90
  4. Step 4: Simplify right side
    261,622.08x = 40,759,467,617.03
  5. Step 5: Solve for x
    x = 40,759,467,617.03/261,622.08
  6. Step 6: Final answer
    x = 155,795.21

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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.