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Finding the Fourth Proportional to 282,641.40, 390,066.83 and 161,820.58

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Solution

The fourth proportional to 282,641.40, 390,066.83 and 161,820.58 is: 223,324.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,641.40 : 390,066.83 = 161,820.58 : x
  2. Step 2: Convert to fraction form
    282,641.40/390,066.83 = 161,820.58/x
  3. Step 3: Cross multiply
    282,641.40x = 390,066.83 × 161,820.58
  4. Step 4: Simplify right side
    282,641.40x = 63,120,839,860.26
  5. Step 5: Solve for x
    x = 63,120,839,860.26/282,641.40
  6. Step 6: Final answer
    x = 223,324.82

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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.