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Finding the Fourth Proportional to 518,672.66, 778,140.19 and 144,695.38

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Solution

The fourth proportional to 518,672.66, 778,140.19 and 144,695.38 is: 217,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,672.66 : 778,140.19 = 144,695.38 : x
  2. Step 2: Convert to fraction form
    518,672.66/778,140.19 = 144,695.38/x
  3. Step 3: Cross multiply
    518,672.66x = 778,140.19 × 144,695.38
  4. Step 4: Simplify right side
    518,672.66x = 112,593,290,485.32
  5. Step 5: Solve for x
    x = 112,593,290,485.32/518,672.66
  6. Step 6: Final answer
    x = 217,079.67

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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.