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Finding the Fourth Proportional to 282,629.60, 390,010.80 and 161,770.40

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Solution

The fourth proportional to 282,629.60, 390,010.80 and 161,770.40 is: 223,232.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,629.60 : 390,010.80 = 161,770.40 : x
  2. Step 2: Convert to fraction form
    282,629.60/390,010.80 = 161,770.40/x
  3. Step 3: Cross multiply
    282,629.60x = 390,010.80 × 161,770.40
  4. Step 4: Simplify right side
    282,629.60x = 63,092,203,120.32
  5. Step 5: Solve for x
    x = 63,092,203,120.32/282,629.60
  6. Step 6: Final answer
    x = 223,232.82

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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.