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Finding the Fourth Proportional to 307,268.70, 460,903.05 and 85,652.70

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Solution

The fourth proportional to 307,268.70, 460,903.05 and 85,652.70 is: 128,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,268.70 : 460,903.05 = 85,652.70 : x
  2. Step 2: Convert to fraction form
    307,268.70/460,903.05 = 85,652.70/x
  3. Step 3: Cross multiply
    307,268.70x = 460,903.05 × 85,652.70
  4. Step 4: Simplify right side
    307,268.70x = 39,477,590,670.74
  5. Step 5: Solve for x
    x = 39,477,590,670.74/307,268.70
  6. Step 6: Final answer
    x = 128,479.05

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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.