Home / 288,839.80-433,259.70-89,142.40

Finding the Fourth Proportional to 288,839.80, 433,259.70 and 89,142.40

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Solution

The fourth proportional to 288,839.80, 433,259.70 and 89,142.40 is: 133,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,839.80 : 433,259.70 = 89,142.40 : x
  2. Step 2: Convert to fraction form
    288,839.80/433,259.70 = 89,142.40/x
  3. Step 3: Cross multiply
    288,839.80x = 433,259.70 × 89,142.40
  4. Step 4: Simplify right side
    288,839.80x = 38,621,809,481.28
  5. Step 5: Solve for x
    x = 38,621,809,481.28/288,839.80
  6. Step 6: Final answer
    x = 133,713.60

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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.