Home / 385,695.08-578,525.70-105,211.40

Finding the Fourth Proportional to 385,695.08, 578,525.70 and 105,211.40

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Solution

The fourth proportional to 385,695.08, 578,525.70 and 105,211.40 is: 157,812.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,695.08 : 578,525.70 = 105,211.40 : x
  2. Step 2: Convert to fraction form
    385,695.08/578,525.70 = 105,211.40/x
  3. Step 3: Cross multiply
    385,695.08x = 578,525.70 × 105,211.40
  4. Step 4: Simplify right side
    385,695.08x = 60,867,498,832.98
  5. Step 5: Solve for x
    x = 60,867,498,832.98/385,695.08
  6. Step 6: Final answer
    x = 157,812.48

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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.