Home / 385,461.06-578,309.90-172,408.23

Finding the Fourth Proportional to 385,461.06, 578,309.90 and 172,408.23

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Solution

The fourth proportional to 385,461.06, 578,309.90 and 172,408.23 is: 258,665.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,461.06 : 578,309.90 = 172,408.23 : x
  2. Step 2: Convert to fraction form
    385,461.06/578,309.90 = 172,408.23/x
  3. Step 3: Cross multiply
    385,461.06x = 578,309.90 × 172,408.23
  4. Step 4: Simplify right side
    385,461.06x = 99,705,385,388.44
  5. Step 5: Solve for x
    x = 99,705,385,388.44/385,461.06
  6. Step 6: Final answer
    x = 258,665.26

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1.5x scale

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.