Home / 389,927.26-584,890.86-212,583.40

Finding the Fourth Proportional to 389,927.26, 584,890.86 and 212,583.40

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Solution

The fourth proportional to 389,927.26, 584,890.86 and 212,583.40 is: 318,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,927.26 : 584,890.86 = 212,583.40 : x
  2. Step 2: Convert to fraction form
    389,927.26/584,890.86 = 212,583.40/x
  3. Step 3: Cross multiply
    389,927.26x = 584,890.86 × 212,583.40
  4. Step 4: Simplify right side
    389,927.26x = 124,338,087,647.72
  5. Step 5: Solve for x
    x = 124,338,087,647.72/389,927.26
  6. Step 6: Final answer
    x = 318,875.08

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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.