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Finding the Fourth Proportional to 312,225.75, 430,871.51 and 168,985.79

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Solution

The fourth proportional to 312,225.75, 430,871.51 and 168,985.79 is: 233,200.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,225.75 : 430,871.51 = 168,985.79 : x
  2. Step 2: Convert to fraction form
    312,225.75/430,871.51 = 168,985.79/x
  3. Step 3: Cross multiply
    312,225.75x = 430,871.51 × 168,985.79
  4. Step 4: Simplify right side
    312,225.75x = 72,811,160,351.49
  5. Step 5: Solve for x
    x = 72,811,160,351.49/312,225.75
  6. Step 6: Final answer
    x = 233,200.37

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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.