Home / 286,916.80-430,399.29-87,238.92

Finding the Fourth Proportional to 286,916.80, 430,399.29 and 87,238.92

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Solution

The fourth proportional to 286,916.80, 430,399.29 and 87,238.92 is: 130,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,916.80 : 430,399.29 = 87,238.92 : x
  2. Step 2: Convert to fraction form
    286,916.80/430,399.29 = 87,238.92/x
  3. Step 3: Cross multiply
    286,916.80x = 430,399.29 × 87,238.92
  4. Step 4: Simplify right side
    286,916.80x = 37,547,569,228.37
  5. Step 5: Solve for x
    x = 37,547,569,228.37/286,916.80
  6. Step 6: Final answer
    x = 130,865.70

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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.