Home / 420,026.20-579,615.16-238,714.18

Finding the Fourth Proportional to 420,026.20, 579,615.16 and 238,714.18

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Solution

The fourth proportional to 420,026.20, 579,615.16 and 238,714.18 is: 329,413.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,026.20 : 579,615.16 = 238,714.18 : x
  2. Step 2: Convert to fraction form
    420,026.20/579,615.16 = 238,714.18/x
  3. Step 3: Cross multiply
    420,026.20x = 579,615.16 × 238,714.18
  4. Step 4: Simplify right side
    420,026.20x = 138,362,357,634.97
  5. Step 5: Solve for x
    x = 138,362,357,634.97/420,026.20
  6. Step 6: Final answer
    x = 329,413.64

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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.