Home / 287,249.79-430,904.18-109,905.96

Finding the Fourth Proportional to 287,249.79, 430,904.18 and 109,905.96

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Solution

The fourth proportional to 287,249.79, 430,904.18 and 109,905.96 is: 164,870.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,249.79 : 430,904.18 = 109,905.96 : x
  2. Step 2: Convert to fraction form
    287,249.79/430,904.18 = 109,905.96/x
  3. Step 3: Cross multiply
    287,249.79x = 430,904.18 × 109,905.96
  4. Step 4: Simplify right side
    287,249.79x = 47,358,934,866.86
  5. Step 5: Solve for x
    x = 47,358,934,866.86/287,249.79
  6. Step 6: Final answer
    x = 164,870.22

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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.