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Finding the Fourth Proportional to 479,278.08, 718,986.24 and 146,880

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Solution

The fourth proportional to 479,278.08, 718,986.24 and 146,880 is: 220,341.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,278.08 : 718,986.24 = 146,880 : x
  2. Step 2: Convert to fraction form
    479,278.08/718,986.24 = 146,880/x
  3. Step 3: Cross multiply
    479,278.08x = 718,986.24 × 146,880
  4. Step 4: Simplify right side
    479,278.08x = 105,604,698,931.20
  5. Step 5: Solve for x
    x = 105,604,698,931.20/479,278.08
  6. Step 6: Final answer
    x = 220,341.18

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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.