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Finding the Fourth Proportional to 315,790.32, 435,790.76 and 170,596.16

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Solution

The fourth proportional to 315,790.32, 435,790.76 and 170,596.16 is: 235,422.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,790.32 : 435,790.76 = 170,596.16 : x
  2. Step 2: Convert to fraction form
    315,790.32/435,790.76 = 170,596.16/x
  3. Step 3: Cross multiply
    315,790.32x = 435,790.76 × 170,596.16
  4. Step 4: Simplify right side
    315,790.32x = 74,344,227,187.55
  5. Step 5: Solve for x
    x = 74,344,227,187.55/315,790.32
  6. Step 6: Final answer
    x = 235,422.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.