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Finding the Fourth Proportional to 533,290.91, 735,953.04 and 318,390.89

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Solution

The fourth proportional to 533,290.91, 735,953.04 and 318,390.89 is: 439,386.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,290.91 : 735,953.04 = 318,390.89 : x
  2. Step 2: Convert to fraction form
    533,290.91/735,953.04 = 318,390.89/x
  3. Step 3: Cross multiply
    533,290.91x = 735,953.04 × 318,390.89
  4. Step 4: Simplify right side
    533,290.91x = 234,320,739,724.04
  5. Step 5: Solve for x
    x = 234,320,739,724.04/533,290.91
  6. Step 6: Final answer
    x = 439,386.34

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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.