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Finding the Fourth Proportional to 486,172.89, 670,955.76 and 268,423.56

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Solution

The fourth proportional to 486,172.89, 670,955.76 and 268,423.56 is: 370,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,172.89 : 670,955.76 = 268,423.56 : x
  2. Step 2: Convert to fraction form
    486,172.89/670,955.76 = 268,423.56/x
  3. Step 3: Cross multiply
    486,172.89x = 670,955.76 × 268,423.56
  4. Step 4: Simplify right side
    486,172.89x = 180,100,333,701.71
  5. Step 5: Solve for x
    x = 180,100,333,701.71/486,172.89
  6. Step 6: Final answer
    x = 370,445.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.