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Finding the Fourth Proportional to 310,999.55, 429,220.61 and 175,059.88

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Solution

The fourth proportional to 310,999.55, 429,220.61 and 175,059.88 is: 241,605.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,999.55 : 429,220.61 = 175,059.88 : x
  2. Step 2: Convert to fraction form
    310,999.55/429,220.61 = 175,059.88/x
  3. Step 3: Cross multiply
    310,999.55x = 429,220.61 × 175,059.88
  4. Step 4: Simplify right side
    310,999.55x = 75,139,307,844.73
  5. Step 5: Solve for x
    x = 75,139,307,844.73/310,999.55
  6. Step 6: Final answer
    x = 241,605.84

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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.