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Finding the Fourth Proportional to 315,384.24, 435,228.48 and 172,143.84

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Solution

The fourth proportional to 315,384.24, 435,228.48 and 172,143.84 is: 237,557.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,384.24 : 435,228.48 = 172,143.84 : x
  2. Step 2: Convert to fraction form
    315,384.24/435,228.48 = 172,143.84/x
  3. Step 3: Cross multiply
    315,384.24x = 435,228.48 × 172,143.84
  4. Step 4: Simplify right side
    315,384.24x = 74,921,901,824.56
  5. Step 5: Solve for x
    x = 74,921,901,824.56/315,384.24
  6. Step 6: Final answer
    x = 237,557.53

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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.