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Finding the Fourth Proportional to 388,770.60, 583,317 and 186,264.12

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Solution

The fourth proportional to 388,770.60, 583,317 and 186,264.12 is: 279,473.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,770.60 : 583,317 = 186,264.12 : x
  2. Step 2: Convert to fraction form
    388,770.60/583,317 = 186,264.12/x
  3. Step 3: Cross multiply
    388,770.60x = 583,317 × 186,264.12
  4. Step 4: Simplify right side
    388,770.60x = 108,651,027,686.04
  5. Step 5: Solve for x
    x = 108,651,027,686.04/388,770.60
  6. Step 6: Final answer
    x = 279,473.36

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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.