Home / 310,701.12-428,594.40-215,263.68

Finding the Fourth Proportional to 310,701.12, 428,594.40 and 215,263.68

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Solution

The fourth proportional to 310,701.12, 428,594.40 and 215,263.68 is: 296,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,701.12 : 428,594.40 = 215,263.68 : x
  2. Step 2: Convert to fraction form
    310,701.12/428,594.40 = 215,263.68/x
  3. Step 3: Cross multiply
    310,701.12x = 428,594.40 × 215,263.68
  4. Step 4: Simplify right side
    310,701.12x = 92,260,807,771.39
  5. Step 5: Solve for x
    x = 92,260,807,771.39/310,701.12
  6. Step 6: Final answer
    x = 296,943.92

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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.