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Finding the Fourth Proportional to 350,511.60, 525,767.40 and 128,866.80

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Solution

The fourth proportional to 350,511.60, 525,767.40 and 128,866.80 is: 193,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,511.60 : 525,767.40 = 128,866.80 : x
  2. Step 2: Convert to fraction form
    350,511.60/525,767.40 = 128,866.80/x
  3. Step 3: Cross multiply
    350,511.60x = 525,767.40 × 128,866.80
  4. Step 4: Simplify right side
    350,511.60x = 67,753,962,382.32
  5. Step 5: Solve for x
    x = 67,753,962,382.32/350,511.60
  6. Step 6: Final answer
    x = 193,300.20

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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.