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Finding the Fourth Proportional to 469,172.49, 647,440.69 and 254,307.94

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Solution

The fourth proportional to 469,172.49, 647,440.69 and 254,307.94 is: 350,935.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,172.49 : 647,440.69 = 254,307.94 : x
  2. Step 2: Convert to fraction form
    469,172.49/647,440.69 = 254,307.94/x
  3. Step 3: Cross multiply
    469,172.49x = 647,440.69 × 254,307.94
  4. Step 4: Simplify right side
    469,172.49x = 164,649,303,637.34
  5. Step 5: Solve for x
    x = 164,649,303,637.34/469,172.49
  6. Step 6: Final answer
    x = 350,935.55

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1.5x scale

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.