Home / 287,243.15-430,929.33-87,583.72

Finding the Fourth Proportional to 287,243.15, 430,929.33 and 87,583.72

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Solution

The fourth proportional to 287,243.15, 430,929.33 and 87,583.72 is: 131,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,243.15 : 430,929.33 = 87,583.72 : x
  2. Step 2: Convert to fraction form
    287,243.15/430,929.33 = 87,583.72/x
  3. Step 3: Cross multiply
    287,243.15x = 430,929.33 × 87,583.72
  4. Step 4: Simplify right side
    287,243.15x = 37,742,393,778.51
  5. Step 5: Solve for x
    x = 37,742,393,778.51/287,243.15
  6. Step 6: Final answer
    x = 131,395.28

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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.