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Finding the Fourth Proportional to 288,677.80, 433,016.70 and 88,980.40

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Solution

The fourth proportional to 288,677.80, 433,016.70 and 88,980.40 is: 133,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,677.80 : 433,016.70 = 88,980.40 : x
  2. Step 2: Convert to fraction form
    288,677.80/433,016.70 = 88,980.40/x
  3. Step 3: Cross multiply
    288,677.80x = 433,016.70 × 88,980.40
  4. Step 4: Simplify right side
    288,677.80x = 38,529,999,172.68
  5. Step 5: Solve for x
    x = 38,529,999,172.68/288,677.80
  6. Step 6: Final answer
    x = 133,470.60

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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.