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Finding the Fourth Proportional to 288,840.16, 433,220.16 and 89,167.12

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Solution

The fourth proportional to 288,840.16, 433,220.16 and 89,167.12 is: 133,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,840.16 : 433,220.16 = 89,167.12 : x
  2. Step 2: Convert to fraction form
    288,840.16/433,220.16 = 89,167.12/x
  3. Step 3: Cross multiply
    288,840.16x = 433,220.16 × 89,167.12
  4. Step 4: Simplify right side
    288,840.16x = 38,628,993,993.14
  5. Step 5: Solve for x
    x = 38,628,993,993.14/288,840.16
  6. Step 6: Final answer
    x = 133,738.31

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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.