Home / 389,400.82-583,754.04-209,582.84

Finding the Fourth Proportional to 389,400.82, 583,754.04 and 209,582.84

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Solution

The fourth proportional to 389,400.82, 583,754.04 and 209,582.84 is: 314,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,400.82 : 583,754.04 = 209,582.84 : x
  2. Step 2: Convert to fraction form
    389,400.82/583,754.04 = 209,582.84/x
  3. Step 3: Cross multiply
    389,400.82x = 583,754.04 × 209,582.84
  4. Step 4: Simplify right side
    389,400.82x = 122,344,831,024.06
  5. Step 5: Solve for x
    x = 122,344,831,024.06/389,400.82
  6. Step 6: Final answer
    x = 314,187.40

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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.