Home / 309,844.40-427,528.48-208,017.68

Finding the Fourth Proportional to 309,844.40, 427,528.48 and 208,017.68

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Solution

The fourth proportional to 309,844.40, 427,528.48 and 208,017.68 is: 287,026.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,844.40 : 427,528.48 = 208,017.68 : x
  2. Step 2: Convert to fraction form
    309,844.40/427,528.48 = 208,017.68/x
  3. Step 3: Cross multiply
    309,844.40x = 427,528.48 × 208,017.68
  4. Step 4: Simplify right side
    309,844.40x = 88,933,482,543.53
  5. Step 5: Solve for x
    x = 88,933,482,543.53/309,844.40
  6. Step 6: Final answer
    x = 287,026.27

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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.