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Finding the Fourth Proportional to 620,359.54, 930,030.75 and 220,772.77

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Solution

The fourth proportional to 620,359.54, 930,030.75 and 220,772.77 is: 330,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,359.54 : 930,030.75 = 220,772.77 : x
  2. Step 2: Convert to fraction form
    620,359.54/930,030.75 = 220,772.77/x
  3. Step 3: Cross multiply
    620,359.54x = 930,030.75 × 220,772.77
  4. Step 4: Simplify right side
    620,359.54x = 205,325,460,212.52
  5. Step 5: Solve for x
    x = 205,325,460,212.52/620,359.54
  6. Step 6: Final answer
    x = 330,978.16

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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.