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Finding the Fourth Proportional to 555,399.68, 766,455.20 and 300,750.88

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Solution

The fourth proportional to 555,399.68, 766,455.20 and 300,750.88 is: 415,038.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,399.68 : 766,455.20 = 300,750.88 : x
  2. Step 2: Convert to fraction form
    555,399.68/766,455.20 = 300,750.88/x
  3. Step 3: Cross multiply
    555,399.68x = 766,455.20 × 300,750.88
  4. Step 4: Simplify right side
    555,399.68x = 230,512,075,880.58
  5. Step 5: Solve for x
    x = 230,512,075,880.58/555,399.68
  6. Step 6: Final answer
    x = 415,038.19

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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.