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Finding the Fourth Proportional to 288,316.80, 432,086.40 and 193,276.80

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Solution

The fourth proportional to 288,316.80, 432,086.40 and 193,276.80 is: 289,654.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,316.80 : 432,086.40 = 193,276.80 : x
  2. Step 2: Convert to fraction form
    288,316.80/432,086.40 = 193,276.80/x
  3. Step 3: Cross multiply
    288,316.80x = 432,086.40 × 193,276.80
  4. Step 4: Simplify right side
    288,316.80x = 83,512,276,715.52
  5. Step 5: Solve for x
    x = 83,512,276,715.52/288,316.80
  6. Step 6: Final answer
    x = 289,654.56

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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.