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Finding the Fourth Proportional to 315,280.56, 435,085.44 and 172,040.16

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Solution

The fourth proportional to 315,280.56, 435,085.44 and 172,040.16 is: 237,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,280.56 : 435,085.44 = 172,040.16 : x
  2. Step 2: Convert to fraction form
    315,280.56/435,085.44 = 172,040.16/x
  3. Step 3: Cross multiply
    315,280.56x = 435,085.44 × 172,040.16
  4. Step 4: Simplify right side
    315,280.56x = 74,852,168,711.27
  5. Step 5: Solve for x
    x = 74,852,168,711.27/315,280.56
  6. Step 6: Final answer
    x = 237,414.48

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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.