Home / 421,435.65-581,572.35-230,448.90

Finding the Fourth Proportional to 421,435.65, 581,572.35 and 230,448.90

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Solution

The fourth proportional to 421,435.65, 581,572.35 and 230,448.90 is: 318,014.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,435.65 : 581,572.35 = 230,448.90 : x
  2. Step 2: Convert to fraction form
    421,435.65/581,572.35 = 230,448.90/x
  3. Step 3: Cross multiply
    421,435.65x = 581,572.35 × 230,448.90
  4. Step 4: Simplify right side
    421,435.65x = 134,022,708,327.92
  5. Step 5: Solve for x
    x = 134,022,708,327.92/421,435.65
  6. Step 6: Final answer
    x = 318,014.64

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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.