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Finding the Fourth Proportional to 308,387.98, 462,347.51 and 213,365.56

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Solution

The fourth proportional to 308,387.98, 462,347.51 and 213,365.56 is: 319,886.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,387.98 : 462,347.51 = 213,365.56 : x
  2. Step 2: Convert to fraction form
    308,387.98/462,347.51 = 213,365.56/x
  3. Step 3: Cross multiply
    308,387.98x = 462,347.51 × 213,365.56
  4. Step 4: Simplify right side
    308,387.98x = 98,649,035,385.76
  5. Step 5: Solve for x
    x = 98,649,035,385.76/308,387.98
  6. Step 6: Final answer
    x = 319,886.12

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1.5x scale

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.