Home / 287,992.40-397,426.06-158,931.86

Finding the Fourth Proportional to 287,992.40, 397,426.06 and 158,931.86

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Solution

The fourth proportional to 287,992.40, 397,426.06 and 158,931.86 is: 219,324.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,992.40 : 397,426.06 = 158,931.86 : x
  2. Step 2: Convert to fraction form
    287,992.40/397,426.06 = 158,931.86/x
  3. Step 3: Cross multiply
    287,992.40x = 397,426.06 × 158,931.86
  4. Step 4: Simplify right side
    287,992.40x = 63,163,662,928.27
  5. Step 5: Solve for x
    x = 63,163,662,928.27/287,992.40
  6. Step 6: Final answer
    x = 219,324.06

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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.