Home / 421,581.78-581,776.02-230,593.50

Finding the Fourth Proportional to 421,581.78, 581,776.02 and 230,593.50

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Solution

The fourth proportional to 421,581.78, 581,776.02 and 230,593.50 is: 318,215.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,581.78 : 581,776.02 = 230,593.50 : x
  2. Step 2: Convert to fraction form
    421,581.78/581,776.02 = 230,593.50/x
  3. Step 3: Cross multiply
    421,581.78x = 581,776.02 × 230,593.50
  4. Step 4: Simplify right side
    421,581.78x = 134,153,768,667.87
  5. Step 5: Solve for x
    x = 134,153,768,667.87/421,581.78
  6. Step 6: Final answer
    x = 318,215.29

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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.