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Finding the Fourth Proportional to 428,323.01, 590,929.36 and 256,245.93

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Solution

The fourth proportional to 428,323.01, 590,929.36 and 256,245.93 is: 353,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,323.01 : 590,929.36 = 256,245.93 : x
  2. Step 2: Convert to fraction form
    428,323.01/590,929.36 = 256,245.93/x
  3. Step 3: Cross multiply
    428,323.01x = 590,929.36 × 256,245.93
  4. Step 4: Simplify right side
    428,323.01x = 151,423,242,776.89
  5. Step 5: Solve for x
    x = 151,423,242,776.89/428,323.01
  6. Step 6: Final answer
    x = 353,525.82

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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.