Home / 320,916.48-442,903.20-186,780.48

Finding the Fourth Proportional to 320,916.48, 442,903.20 and 186,780.48

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Solution

The fourth proportional to 320,916.48, 442,903.20 and 186,780.48 is: 257,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,916.48 : 442,903.20 = 186,780.48 : x
  2. Step 2: Convert to fraction form
    320,916.48/442,903.20 = 186,780.48/x
  3. Step 3: Cross multiply
    320,916.48x = 442,903.20 × 186,780.48
  4. Step 4: Simplify right side
    320,916.48x = 82,725,672,289.54
  5. Step 5: Solve for x
    x = 82,725,672,289.54/320,916.48
  6. Step 6: Final answer
    x = 257,779.45

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1.5x scale

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.