Home / 421,593.48-581,784.40-240,363.78

Finding the Fourth Proportional to 421,593.48, 581,784.40 and 240,363.78

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Solution

The fourth proportional to 421,593.48, 581,784.40 and 240,363.78 is: 331,693.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,593.48 : 581,784.40 = 240,363.78 : x
  2. Step 2: Convert to fraction form
    421,593.48/581,784.40 = 240,363.78/x
  3. Step 3: Cross multiply
    421,593.48x = 581,784.40 × 240,363.78
  4. Step 4: Simplify right side
    421,593.48x = 139,839,897,529.03
  5. Step 5: Solve for x
    x = 139,839,897,529.03/421,593.48
  6. Step 6: Final answer
    x = 331,693.69

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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.