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Finding the Fourth Proportional to 307,203.18, 460,804.41 and 85,587.18

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Solution

The fourth proportional to 307,203.18, 460,804.41 and 85,587.18 is: 128,380.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,203.18 : 460,804.41 = 85,587.18 : x
  2. Step 2: Convert to fraction form
    307,203.18/460,804.41 = 85,587.18/x
  3. Step 3: Cross multiply
    307,203.18x = 460,804.41 × 85,587.18
  4. Step 4: Simplify right side
    307,203.18x = 39,438,949,983.46
  5. Step 5: Solve for x
    x = 39,438,949,983.46/307,203.18
  6. Step 6: Final answer
    x = 128,380.67

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1.5x scale

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.