Home / 386,362.60-578,622.30-189,140.20

Finding the Fourth Proportional to 386,362.60, 578,622.30 and 189,140.20

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Solution

The fourth proportional to 386,362.60, 578,622.30 and 189,140.20 is: 283,259.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,362.60 : 578,622.30 = 189,140.20 : x
  2. Step 2: Convert to fraction form
    386,362.60/578,622.30 = 189,140.20/x
  3. Step 3: Cross multiply
    386,362.60x = 578,622.30 × 189,140.20
  4. Step 4: Simplify right side
    386,362.60x = 109,440,737,546.46
  5. Step 5: Solve for x
    x = 109,440,737,546.46/386,362.60
  6. Step 6: Final answer
    x = 283,259.14

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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.