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Finding the Fourth Proportional to 551,038.66, 760,364.48 and 305,990.10

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Solution

The fourth proportional to 551,038.66, 760,364.48 and 305,990.10 is: 422,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,038.66 : 760,364.48 = 305,990.10 : x
  2. Step 2: Convert to fraction form
    551,038.66/760,364.48 = 305,990.10/x
  3. Step 3: Cross multiply
    551,038.66x = 760,364.48 × 305,990.10
  4. Step 4: Simplify right side
    551,038.66x = 232,664,004,036.62
  5. Step 5: Solve for x
    x = 232,664,004,036.62/551,038.66
  6. Step 6: Final answer
    x = 422,228.10

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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.