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Finding the Fourth Proportional to 556,919.20, 768,549.20 and 302,270.40

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Solution

The fourth proportional to 556,919.20, 768,549.20 and 302,270.40 is: 417,133.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,919.20 : 768,549.20 = 302,270.40 : x
  2. Step 2: Convert to fraction form
    556,919.20/768,549.20 = 302,270.40/x
  3. Step 3: Cross multiply
    556,919.20x = 768,549.20 × 302,270.40
  4. Step 4: Simplify right side
    556,919.20x = 232,309,674,103.68
  5. Step 5: Solve for x
    x = 232,309,674,103.68/556,919.20
  6. Step 6: Final answer
    x = 417,133.53

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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.