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Finding the Fourth Proportional to 390,366.54, 538,497.82 and 237,451.50

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Solution

The fourth proportional to 390,366.54, 538,497.82 and 237,451.50 is: 327,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,366.54 : 538,497.82 = 237,451.50 : x
  2. Step 2: Convert to fraction form
    390,366.54/538,497.82 = 237,451.50/x
  3. Step 3: Cross multiply
    390,366.54x = 538,497.82 × 237,451.50
  4. Step 4: Simplify right side
    390,366.54x = 127,867,115,402.54
  5. Step 5: Solve for x
    x = 127,867,115,402.54/390,366.54
  6. Step 6: Final answer
    x = 327,556.55

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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.