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Finding the Fourth Proportional to 400,328.74, 600,730.26 and 147,785.32

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Solution

The fourth proportional to 400,328.74, 600,730.26 and 147,785.32 is: 221,765.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,328.74 : 600,730.26 = 147,785.32 : x
  2. Step 2: Convert to fraction form
    400,328.74/600,730.26 = 147,785.32/x
  3. Step 3: Cross multiply
    400,328.74x = 600,730.26 × 147,785.32
  4. Step 4: Simplify right side
    400,328.74x = 88,779,113,707.78
  5. Step 5: Solve for x
    x = 88,779,113,707.78/400,328.74
  6. Step 6: Final answer
    x = 221,765.53

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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.