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Finding the Fourth Proportional to 310,433.58, 428,402.05 and 174,459.56

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Solution

The fourth proportional to 310,433.58, 428,402.05 and 174,459.56 is: 240,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,433.58 : 428,402.05 = 174,459.56 : x
  2. Step 2: Convert to fraction form
    310,433.58/428,402.05 = 174,459.56/x
  3. Step 3: Cross multiply
    310,433.58x = 428,402.05 × 174,459.56
  4. Step 4: Simplify right side
    310,433.58x = 74,738,830,567.94
  5. Step 5: Solve for x
    x = 74,738,830,567.94/310,433.58
  6. Step 6: Final answer
    x = 240,756.27

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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.