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Finding the Fourth Proportional to 470,988.48, 649,967.20 and 256,130.88

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Solution

The fourth proportional to 470,988.48, 649,967.20 and 256,130.88 is: 353,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,988.48 : 649,967.20 = 256,130.88 : x
  2. Step 2: Convert to fraction form
    470,988.48/649,967.20 = 256,130.88/x
  3. Step 3: Cross multiply
    470,988.48x = 649,967.20 × 256,130.88
  4. Step 4: Simplify right side
    470,988.48x = 166,476,670,907.14
  5. Step 5: Solve for x
    x = 166,476,670,907.14/470,988.48
  6. Step 6: Final answer
    x = 353,462.30

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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.