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Finding the Fourth Proportional to 395,407.58, 592,988.70 and 142,655.21

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Solution

The fourth proportional to 395,407.58, 592,988.70 and 142,655.21 is: 213,938.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,407.58 : 592,988.70 = 142,655.21 : x
  2. Step 2: Convert to fraction form
    395,407.58/592,988.70 = 142,655.21/x
  3. Step 3: Cross multiply
    395,407.58x = 592,988.70 × 142,655.21
  4. Step 4: Simplify right side
    395,407.58x = 84,592,927,169.49
  5. Step 5: Solve for x
    x = 84,592,927,169.49/395,407.58
  6. Step 6: Final answer
    x = 213,938.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.