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Finding the Fourth Proportional to 399,114.84, 551,004.63 and 276,784.98

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Solution

The fourth proportional to 399,114.84, 551,004.63 and 276,784.98 is: 382,120.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,114.84 : 551,004.63 = 276,784.98 : x
  2. Step 2: Convert to fraction form
    399,114.84/551,004.63 = 276,784.98/x
  3. Step 3: Cross multiply
    399,114.84x = 551,004.63 × 276,784.98
  4. Step 4: Simplify right side
    399,114.84x = 152,509,805,494.46
  5. Step 5: Solve for x
    x = 152,509,805,494.46/399,114.84
  6. Step 6: Final answer
    x = 382,120.11

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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.