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Finding the Fourth Proportional to 288,860.12, 398,619.48 and 159,803.36

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Solution

The fourth proportional to 288,860.12, 398,619.48 and 159,803.36 is: 220,524.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,860.12 : 398,619.48 = 159,803.36 : x
  2. Step 2: Convert to fraction form
    288,860.12/398,619.48 = 159,803.36/x
  3. Step 3: Cross multiply
    288,860.12x = 398,619.48 × 159,803.36
  4. Step 4: Simplify right side
    288,860.12x = 63,700,732,265.45
  5. Step 5: Solve for x
    x = 63,700,732,265.45/288,860.12
  6. Step 6: Final answer
    x = 220,524.50

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1.5x scale

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.