Home / 420,053.85-579,504.93-243,127.87

Finding the Fourth Proportional to 420,053.85, 579,504.93 and 243,127.87

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Solution

The fourth proportional to 420,053.85, 579,504.93 and 243,127.87 is: 335,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,053.85 : 579,504.93 = 243,127.87 : x
  2. Step 2: Convert to fraction form
    420,053.85/579,504.93 = 243,127.87/x
  3. Step 3: Cross multiply
    420,053.85x = 579,504.93 × 243,127.87
  4. Step 4: Simplify right side
    420,053.85x = 140,893,799,285.40
  5. Step 5: Solve for x
    x = 140,893,799,285.40/420,053.85
  6. Step 6: Final answer
    x = 335,418.42

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1.5x scale

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.