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Finding the Fourth Proportional to 349,957.16, 525,004.86 and 128,343.08

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Solution

The fourth proportional to 349,957.16, 525,004.86 and 128,343.08 is: 192,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,957.16 : 525,004.86 = 128,343.08 : x
  2. Step 2: Convert to fraction form
    349,957.16/525,004.86 = 128,343.08/x
  3. Step 3: Cross multiply
    349,957.16x = 525,004.86 × 128,343.08
  4. Step 4: Simplify right side
    349,957.16x = 67,380,740,747.37
  5. Step 5: Solve for x
    x = 67,380,740,747.37/349,957.16
  6. Step 6: Final answer
    x = 192,539.97

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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.