Home / 345,521.30-476,537.45-290,116.76

Finding the Fourth Proportional to 345,521.30, 476,537.45 and 290,116.76

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Solution

The fourth proportional to 345,521.30, 476,537.45 and 290,116.76 is: 400,124.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,521.30 : 476,537.45 = 290,116.76 : x
  2. Step 2: Convert to fraction form
    345,521.30/476,537.45 = 290,116.76/x
  3. Step 3: Cross multiply
    345,521.30x = 476,537.45 × 290,116.76
  4. Step 4: Simplify right side
    345,521.30x = 138,251,497,179.39
  5. Step 5: Solve for x
    x = 138,251,497,179.39/345,521.30
  6. Step 6: Final answer
    x = 400,124.39

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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.