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Finding the Fourth Proportional to 238,412.20, 357,618.30 and 72,200.20

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Solution

The fourth proportional to 238,412.20, 357,618.30 and 72,200.20 is: 108,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,412.20 : 357,618.30 = 72,200.20 : x
  2. Step 2: Convert to fraction form
    238,412.20/357,618.30 = 72,200.20/x
  3. Step 3: Cross multiply
    238,412.20x = 357,618.30 × 72,200.20
  4. Step 4: Simplify right side
    238,412.20x = 25,820,112,783.66
  5. Step 5: Solve for x
    x = 25,820,112,783.66/238,412.20
  6. Step 6: Final answer
    x = 108,300.30

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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.