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Finding the Fourth Proportional to 391,597.02, 540,393.39 and 230,461.56

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Solution

The fourth proportional to 391,597.02, 540,393.39 and 230,461.56 is: 318,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,597.02 : 540,393.39 = 230,461.56 : x
  2. Step 2: Convert to fraction form
    391,597.02/540,393.39 = 230,461.56/x
  3. Step 3: Cross multiply
    391,597.02x = 540,393.39 × 230,461.56
  4. Step 4: Simplify right side
    391,597.02x = 124,539,903,673.09
  5. Step 5: Solve for x
    x = 124,539,903,673.09/391,597.02
  6. Step 6: Final answer
    x = 318,030.77

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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.