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Finding the Fourth Proportional to 389,700, 584,567.01 and 123,480.14

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Solution

The fourth proportional to 389,700, 584,567.01 and 123,480.14 is: 185,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,700 : 584,567.01 = 123,480.14 : x
  2. Step 2: Convert to fraction form
    389,700/584,567.01 = 123,480.14/x
  3. Step 3: Cross multiply
    389,700x = 584,567.01 × 123,480.14
  4. Step 4: Simplify right side
    389,700x = 72,182,413,311.35
  5. Step 5: Solve for x
    x = 72,182,413,311.35/389,700
  6. Step 6: Final answer
    x = 185,225.59

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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.