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Finding the Fourth Proportional to 170,438.40, 255,657.60 and 153,849.60

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Solution

The fourth proportional to 170,438.40, 255,657.60 and 153,849.60 is: 230,774.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,438.40 : 255,657.60 = 153,849.60 : x
  2. Step 2: Convert to fraction form
    170,438.40/255,657.60 = 153,849.60/x
  3. Step 3: Cross multiply
    170,438.40x = 255,657.60 × 153,849.60
  4. Step 4: Simplify right side
    170,438.40x = 39,332,819,496.96
  5. Step 5: Solve for x
    x = 39,332,819,496.96/170,438.40
  6. Step 6: Final answer
    x = 230,774.40

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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.