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Finding the Fourth Proportional to 479,219.40, 718,829.10 and 146,752.20

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Solution

The fourth proportional to 479,219.40, 718,829.10 and 146,752.20 is: 220,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,219.40 : 718,829.10 = 146,752.20 : x
  2. Step 2: Convert to fraction form
    479,219.40/718,829.10 = 146,752.20/x
  3. Step 3: Cross multiply
    479,219.40x = 718,829.10 × 146,752.20
  4. Step 4: Simplify right side
    479,219.40x = 105,489,751,849.02
  5. Step 5: Solve for x
    x = 105,489,751,849.02/479,219.40
  6. Step 6: Final answer
    x = 220,128.30

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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.