Home / 278,779.09-384,723.01-157,920.34

Finding the Fourth Proportional to 278,779.09, 384,723.01 and 157,920.34

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Solution

The fourth proportional to 278,779.09, 384,723.01 and 157,920.34 is: 217,934.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,779.09 : 384,723.01 = 157,920.34 : x
  2. Step 2: Convert to fraction form
    278,779.09/384,723.01 = 157,920.34/x
  3. Step 3: Cross multiply
    278,779.09x = 384,723.01 × 157,920.34
  4. Step 4: Simplify right side
    278,779.09x = 60,755,588,545.02
  5. Step 5: Solve for x
    x = 60,755,588,545.02/278,779.09
  6. Step 6: Final answer
    x = 217,934.52

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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.