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Finding the Fourth Proportional to 390,008.64, 538,248 and 237,011.52

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Solution

The fourth proportional to 390,008.64, 538,248 and 237,011.52 is: 327,097.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,008.64 : 538,248 = 237,011.52 : x
  2. Step 2: Convert to fraction form
    390,008.64/538,248 = 237,011.52/x
  3. Step 3: Cross multiply
    390,008.64x = 538,248 × 237,011.52
  4. Step 4: Simplify right side
    390,008.64x = 127,570,976,616.96
  5. Step 5: Solve for x
    x = 127,570,976,616.96/390,008.64
  6. Step 6: Final answer
    x = 327,097.82

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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.