Home / 315,317.50-435,147.33-172,086.70

Finding the Fourth Proportional to 315,317.50, 435,147.33 and 172,086.70

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Solution

The fourth proportional to 315,317.50, 435,147.33 and 172,086.70 is: 237,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,317.50 : 435,147.33 = 172,086.70 : x
  2. Step 2: Convert to fraction form
    315,317.50/435,147.33 = 172,086.70/x
  3. Step 3: Cross multiply
    315,317.50x = 435,147.33 × 172,086.70
  4. Step 4: Simplify right side
    315,317.50x = 74,883,068,033.51
  5. Step 5: Solve for x
    x = 74,883,068,033.51/315,317.50
  6. Step 6: Final answer
    x = 237,484.66

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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.