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Finding the Fourth Proportional to 390,263.39, 538,729.52 and 237,350.67

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Solution

The fourth proportional to 390,263.39, 538,729.52 and 237,350.67 is: 327,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,263.39 : 538,729.52 = 237,350.67 : x
  2. Step 2: Convert to fraction form
    390,263.39/538,729.52 = 237,350.67/x
  3. Step 3: Cross multiply
    390,263.39x = 538,729.52 × 237,350.67
  4. Step 4: Simplify right side
    390,263.39x = 127,867,811,334.03
  5. Step 5: Solve for x
    x = 127,867,811,334.03/390,263.39
  6. Step 6: Final answer
    x = 327,644.90

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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.