Home / 420,052.35-579,502.87-243,126.36

Finding the Fourth Proportional to 420,052.35, 579,502.87 and 243,126.36

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Solution

The fourth proportional to 420,052.35, 579,502.87 and 243,126.36 is: 335,416.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,052.35 : 579,502.87 = 243,126.36 : x
  2. Step 2: Convert to fraction form
    420,052.35/579,502.87 = 243,126.36/x
  3. Step 3: Cross multiply
    420,052.35x = 579,502.87 × 243,126.36
  4. Step 4: Simplify right side
    420,052.35x = 140,892,424,957.97
  5. Step 5: Solve for x
    x = 140,892,424,957.97/420,052.35
  6. Step 6: Final answer
    x = 335,416.35

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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.