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Finding the Fourth Proportional to 551,036.66, 760,361.72 and 305,988.10

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Solution

The fourth proportional to 551,036.66, 760,361.72 and 305,988.10 is: 422,225.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,036.66 : 760,361.72 = 305,988.10 : x
  2. Step 2: Convert to fraction form
    551,036.66/760,361.72 = 305,988.10/x
  3. Step 3: Cross multiply
    551,036.66x = 760,361.72 × 305,988.10
  4. Step 4: Simplify right side
    551,036.66x = 232,661,636,879.60
  5. Step 5: Solve for x
    x = 232,661,636,879.60/551,036.66
  6. Step 6: Final answer
    x = 422,225.34

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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.