Home / 420,101.92-579,790.47-238,841.20

Finding the Fourth Proportional to 420,101.92, 579,790.47 and 238,841.20

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Solution

The fourth proportional to 420,101.92, 579,790.47 and 238,841.20 is: 329,629.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,101.92 : 579,790.47 = 238,841.20 : x
  2. Step 2: Convert to fraction form
    420,101.92/579,790.47 = 238,841.20/x
  3. Step 3: Cross multiply
    420,101.92x = 579,790.47 × 238,841.20
  4. Step 4: Simplify right side
    420,101.92x = 138,477,851,603.36
  5. Step 5: Solve for x
    x = 138,477,851,603.36/420,101.92
  6. Step 6: Final answer
    x = 329,629.18

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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.