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Finding the Fourth Proportional to 420,888.75, 631,333.05 and 154,534.02

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Solution

The fourth proportional to 420,888.75, 631,333.05 and 154,534.02 is: 231,801.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,888.75 : 631,333.05 = 154,534.02 : x
  2. Step 2: Convert to fraction form
    420,888.75/631,333.05 = 154,534.02/x
  3. Step 3: Cross multiply
    420,888.75x = 631,333.05 × 154,534.02
  4. Step 4: Simplify right side
    420,888.75x = 97,562,434,175.36
  5. Step 5: Solve for x
    x = 97,562,434,175.36/420,888.75
  6. Step 6: Final answer
    x = 231,801.00

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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.