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Finding the Fourth Proportional to 315,555.76, 435,470.52 and 172,317.52

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Solution

The fourth proportional to 315,555.76, 435,470.52 and 172,317.52 is: 237,800.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,555.76 : 435,470.52 = 172,317.52 : x
  2. Step 2: Convert to fraction form
    315,555.76/435,470.52 = 172,317.52/x
  3. Step 3: Cross multiply
    315,555.76x = 435,470.52 × 172,317.52
  4. Step 4: Simplify right side
    315,555.76x = 75,039,200,039.51
  5. Step 5: Solve for x
    x = 75,039,200,039.51/315,555.76
  6. Step 6: Final answer
    x = 237,800.13

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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.