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Finding the Fourth Proportional to 350,031.50, 525,125.02 and 128,415.50

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Solution

The fourth proportional to 350,031.50, 525,125.02 and 128,415.50 is: 192,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,031.50 : 525,125.02 = 128,415.50 : x
  2. Step 2: Convert to fraction form
    350,031.50/525,125.02 = 128,415.50/x
  3. Step 3: Cross multiply
    350,031.50x = 525,125.02 × 128,415.50
  4. Step 4: Simplify right side
    350,031.50x = 67,434,192,005.81
  5. Step 5: Solve for x
    x = 67,434,192,005.81/350,031.50
  6. Step 6: Final answer
    x = 192,651.78

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1.5x scale

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.