Home / 385,582.37-578,491.77-172,529.60

Finding the Fourth Proportional to 385,582.37, 578,491.77 and 172,529.60

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Solution

The fourth proportional to 385,582.37, 578,491.77 and 172,529.60 is: 258,847.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,582.37 : 578,491.77 = 172,529.60 : x
  2. Step 2: Convert to fraction form
    385,582.37/578,491.77 = 172,529.60/x
  3. Step 3: Cross multiply
    385,582.37x = 578,491.77 × 172,529.60
  4. Step 4: Simplify right side
    385,582.37x = 99,806,950,788.93
  5. Step 5: Solve for x
    x = 99,806,950,788.93/385,582.37
  6. Step 6: Final answer
    x = 258,847.29

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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.