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Finding the Fourth Proportional to 389,775.84, 537,845.04 and 219,999.84

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Solution

The fourth proportional to 389,775.84, 537,845.04 and 219,999.84 is: 303,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,775.84 : 537,845.04 = 219,999.84 : x
  2. Step 2: Convert to fraction form
    389,775.84/537,845.04 = 219,999.84/x
  3. Step 3: Cross multiply
    389,775.84x = 537,845.04 × 219,999.84
  4. Step 4: Simplify right side
    389,775.84x = 118,325,822,744.79
  5. Step 5: Solve for x
    x = 118,325,822,744.79/389,775.84
  6. Step 6: Final answer
    x = 303,574.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.