Home / 385,694.27-578,914.57-186,155.12

Finding the Fourth Proportional to 385,694.27, 578,914.57 and 186,155.12

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Solution

The fourth proportional to 385,694.27, 578,914.57 and 186,155.12 is: 279,412.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,694.27 : 578,914.57 = 186,155.12 : x
  2. Step 2: Convert to fraction form
    385,694.27/578,914.57 = 186,155.12/x
  3. Step 3: Cross multiply
    385,694.27x = 578,914.57 × 186,155.12
  4. Step 4: Simplify right side
    385,694.27x = 107,767,911,248.10
  5. Step 5: Solve for x
    x = 107,767,911,248.10/385,694.27
  6. Step 6: Final answer
    x = 279,412.79

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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.