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Finding the Fourth Proportional to 283,804.48, 391,642.86 and 156,477.88

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Solution

The fourth proportional to 283,804.48, 391,642.86 and 156,477.88 is: 215,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,804.48 : 391,642.86 = 156,477.88 : x
  2. Step 2: Convert to fraction form
    283,804.48/391,642.86 = 156,477.88/x
  3. Step 3: Cross multiply
    283,804.48x = 391,642.86 × 156,477.88
  4. Step 4: Simplify right side
    283,804.48x = 61,283,444,449.94
  5. Step 5: Solve for x
    x = 61,283,444,449.94/283,804.48
  6. Step 6: Final answer
    x = 215,935.44

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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.