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Finding the Fourth Proportional to 551,043.42, 760,465.18 and 306,029.30

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Solution

The fourth proportional to 551,043.42, 760,465.18 and 306,029.30 is: 422,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,043.42 : 760,465.18 = 306,029.30 : x
  2. Step 2: Convert to fraction form
    551,043.42/760,465.18 = 306,029.30/x
  3. Step 3: Cross multiply
    551,043.42x = 760,465.18 × 306,029.30
  4. Step 4: Simplify right side
    551,043.42x = 232,724,626,709.77
  5. Step 5: Solve for x
    x = 232,724,626,709.77/551,043.42
  6. Step 6: Final answer
    x = 422,334.46

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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.