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Finding the Fourth Proportional to 421,495.80, 581,652.40 and 230,505.08

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Solution

The fourth proportional to 421,495.80, 581,652.40 and 230,505.08 is: 318,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,495.80 : 581,652.40 = 230,505.08 : x
  2. Step 2: Convert to fraction form
    421,495.80/581,652.40 = 230,505.08/x
  3. Step 3: Cross multiply
    421,495.80x = 581,652.40 × 230,505.08
  4. Step 4: Simplify right side
    421,495.80x = 134,073,832,994.19
  5. Step 5: Solve for x
    x = 134,073,832,994.19/421,495.80
  6. Step 6: Final answer
    x = 318,090.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.