Home / 315,922.68-435,971.70-172,690.92

Finding the Fourth Proportional to 315,922.68, 435,971.70 and 172,690.92

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Solution

The fourth proportional to 315,922.68, 435,971.70 and 172,690.92 is: 238,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,922.68 : 435,971.70 = 172,690.92 : x
  2. Step 2: Convert to fraction form
    315,922.68/435,971.70 = 172,690.92/x
  3. Step 3: Cross multiply
    315,922.68x = 435,971.70 × 172,690.92
  4. Step 4: Simplify right side
    315,922.68x = 75,288,353,966.96
  5. Step 5: Solve for x
    x = 75,288,353,966.96/315,922.68
  6. Step 6: Final answer
    x = 238,312.60

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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.