Home / 386,445.40-579,668.10-105,962.20

Finding the Fourth Proportional to 386,445.40, 579,668.10 and 105,962.20

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Solution

The fourth proportional to 386,445.40, 579,668.10 and 105,962.20 is: 158,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,445.40 : 579,668.10 = 105,962.20 : x
  2. Step 2: Convert to fraction form
    386,445.40/579,668.10 = 105,962.20/x
  3. Step 3: Cross multiply
    386,445.40x = 579,668.10 × 105,962.20
  4. Step 4: Simplify right side
    386,445.40x = 61,422,907,145.82
  5. Step 5: Solve for x
    x = 61,422,907,145.82/386,445.40
  6. Step 6: Final answer
    x = 158,943.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.