Home / 385,462.06-578,311.40-172,409.23

Finding the Fourth Proportional to 385,462.06, 578,311.40 and 172,409.23

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Solution

The fourth proportional to 385,462.06, 578,311.40 and 172,409.23 is: 258,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,462.06 : 578,311.40 = 172,409.23 : x
  2. Step 2: Convert to fraction form
    385,462.06/578,311.40 = 172,409.23/x
  3. Step 3: Cross multiply
    385,462.06x = 578,311.40 × 172,409.23
  4. Step 4: Simplify right side
    385,462.06x = 99,706,223,174.22
  5. Step 5: Solve for x
    x = 99,706,223,174.22/385,462.06
  6. Step 6: Final answer
    x = 258,666.76

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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.