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Finding the Fourth Proportional to 155,679.20, 233,486.40 and 43,330.40

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Solution

The fourth proportional to 155,679.20, 233,486.40 and 43,330.40 is: 64,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,679.20 : 233,486.40 = 43,330.40 : x
  2. Step 2: Convert to fraction form
    155,679.20/233,486.40 = 43,330.40/x
  3. Step 3: Cross multiply
    155,679.20x = 233,486.40 × 43,330.40
  4. Step 4: Simplify right side
    155,679.20x = 10,117,059,106.56
  5. Step 5: Solve for x
    x = 10,117,059,106.56/155,679.20
  6. Step 6: Final answer
    x = 64,986.58

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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.