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Finding the Fourth Proportional to 470,528.88, 649,256.76 and 279,537.36

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Solution

The fourth proportional to 470,528.88, 649,256.76 and 279,537.36 is: 385,718.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,528.88 : 649,256.76 = 279,537.36 : x
  2. Step 2: Convert to fraction form
    470,528.88/649,256.76 = 279,537.36/x
  3. Step 3: Cross multiply
    470,528.88x = 649,256.76 × 279,537.36
  4. Step 4: Simplify right side
    470,528.88x = 181,491,520,652.55
  5. Step 5: Solve for x
    x = 181,491,520,652.55/470,528.88
  6. Step 6: Final answer
    x = 385,718.13

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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.