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Finding the Fourth Proportional to 389,422.01, 584,128.29 and 101,208.11

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Solution

The fourth proportional to 389,422.01, 584,128.29 and 101,208.11 is: 151,810.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,422.01 : 584,128.29 = 101,208.11 : x
  2. Step 2: Convert to fraction form
    389,422.01/584,128.29 = 101,208.11/x
  3. Step 3: Cross multiply
    389,422.01x = 584,128.29 × 101,208.11
  4. Step 4: Simplify right side
    389,422.01x = 59,118,517,307.79
  5. Step 5: Solve for x
    x = 59,118,517,307.79/389,422.01
  6. Step 6: Final answer
    x = 151,810.93

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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.