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Finding the Fourth Proportional to 389,615.10, 584,301.15 and 153,030.30

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Solution

The fourth proportional to 389,615.10, 584,301.15 and 153,030.30 is: 229,497.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,615.10 : 584,301.15 = 153,030.30 : x
  2. Step 2: Convert to fraction form
    389,615.10/584,301.15 = 153,030.30/x
  3. Step 3: Cross multiply
    389,615.10x = 584,301.15 × 153,030.30
  4. Step 4: Simplify right side
    389,615.10x = 89,415,780,274.85
  5. Step 5: Solve for x
    x = 89,415,780,274.85/389,615.10
  6. Step 6: Final answer
    x = 229,497.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.