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Finding the Fourth Proportional to 555,577.31, 766,696.72 and 300,928.50

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Solution

The fourth proportional to 555,577.31, 766,696.72 and 300,928.50 is: 415,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,577.31 : 766,696.72 = 300,928.50 : x
  2. Step 2: Convert to fraction form
    555,577.31/766,696.72 = 300,928.50/x
  3. Step 3: Cross multiply
    555,577.31x = 766,696.72 × 300,928.50
  4. Step 4: Simplify right side
    555,577.31x = 230,720,893,152.20
  5. Step 5: Solve for x
    x = 230,720,893,152.20/555,577.31
  6. Step 6: Final answer
    x = 415,281.34

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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.