Home / 421,256.06-631,968.78-155,017.97

Finding the Fourth Proportional to 421,256.06, 631,968.78 and 155,017.97

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Solution

The fourth proportional to 421,256.06, 631,968.78 and 155,017.97 is: 232,558.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,256.06 : 631,968.78 = 155,017.97 : x
  2. Step 2: Convert to fraction form
    421,256.06/631,968.78 = 155,017.97/x
  3. Step 3: Cross multiply
    421,256.06x = 631,968.78 × 155,017.97
  4. Step 4: Simplify right side
    421,256.06x = 97,966,517,378.98
  5. Step 5: Solve for x
    x = 97,966,517,378.98/421,256.06
  6. Step 6: Final answer
    x = 232,558.12

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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.