Home / 385,111.34-577,680.19-132,389.67

Finding the Fourth Proportional to 385,111.34, 577,680.19 and 132,389.67

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Solution

The fourth proportional to 385,111.34, 577,680.19 and 132,389.67 is: 198,589.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,111.34 : 577,680.19 = 132,389.67 : x
  2. Step 2: Convert to fraction form
    385,111.34/577,680.19 = 132,389.67/x
  3. Step 3: Cross multiply
    385,111.34x = 577,680.19 × 132,389.67
  4. Step 4: Simplify right side
    385,111.34x = 76,478,889,719.64
  5. Step 5: Solve for x
    x = 76,478,889,719.64/385,111.34
  6. Step 6: Final answer
    x = 198,589.04

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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.