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Finding the Fourth Proportional to 390,365.86, 538,674.96 and 237,382.92

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Solution

The fourth proportional to 390,365.86, 538,674.96 and 237,382.92 is: 327,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,365.86 : 538,674.96 = 237,382.92 : x
  2. Step 2: Convert to fraction form
    390,365.86/538,674.96 = 237,382.92/x
  3. Step 3: Cross multiply
    390,365.86x = 538,674.96 × 237,382.92
  4. Step 4: Simplify right side
    390,365.86x = 127,872,234,935.68
  5. Step 5: Solve for x
    x = 127,872,234,935.68/390,365.86
  6. Step 6: Final answer
    x = 327,570.23

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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.