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Finding the Fourth Proportional to 170,982.40, 256,473.60 and 156,985.60

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Solution

The fourth proportional to 170,982.40, 256,473.60 and 156,985.60 is: 235,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,982.40 : 256,473.60 = 156,985.60 : x
  2. Step 2: Convert to fraction form
    170,982.40/256,473.60 = 156,985.60/x
  3. Step 3: Cross multiply
    170,982.40x = 256,473.60 × 156,985.60
  4. Step 4: Simplify right side
    170,982.40x = 40,262,661,980.16
  5. Step 5: Solve for x
    x = 40,262,661,980.16/170,982.40
  6. Step 6: Final answer
    x = 235,478.40

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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.