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Finding the Fourth Proportional to 310,847.48, 428,985.28 and 183,520.34

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Solution

The fourth proportional to 310,847.48, 428,985.28 and 183,520.34 is: 253,267.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,847.48 : 428,985.28 = 183,520.34 : x
  2. Step 2: Convert to fraction form
    310,847.48/428,985.28 = 183,520.34/x
  3. Step 3: Cross multiply
    310,847.48x = 428,985.28 × 183,520.34
  4. Step 4: Simplify right side
    310,847.48x = 78,727,524,440.60
  5. Step 5: Solve for x
    x = 78,727,524,440.60/310,847.48
  6. Step 6: Final answer
    x = 253,267.37

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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.