Home / 385,416.03-578,139.84-104,933.28

Finding the Fourth Proportional to 385,416.03, 578,139.84 and 104,933.28

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Solution

The fourth proportional to 385,416.03, 578,139.84 and 104,933.28 is: 157,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,416.03 : 578,139.84 = 104,933.28 : x
  2. Step 2: Convert to fraction form
    385,416.03/578,139.84 = 104,933.28/x
  3. Step 3: Cross multiply
    385,416.03x = 578,139.84 × 104,933.28
  4. Step 4: Simplify right side
    385,416.03x = 60,666,109,709.88
  5. Step 5: Solve for x
    x = 60,666,109,709.88/385,416.03
  6. Step 6: Final answer
    x = 157,404.22

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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.