Home / 287,242.15-430,927.83-87,582.72

Finding the Fourth Proportional to 287,242.15, 430,927.83 and 87,582.72

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Solution

The fourth proportional to 287,242.15, 430,927.83 and 87,582.72 is: 131,393.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,242.15 : 430,927.83 = 87,582.72 : x
  2. Step 2: Convert to fraction form
    287,242.15/430,927.83 = 87,582.72/x
  3. Step 3: Cross multiply
    287,242.15x = 430,927.83 × 87,582.72
  4. Step 4: Simplify right side
    287,242.15x = 37,741,831,036.60
  5. Step 5: Solve for x
    x = 37,741,831,036.60/287,242.15
  6. Step 6: Final answer
    x = 131,393.78

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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.