Home / 278,543.19-384,394.23-151,218.75

Finding the Fourth Proportional to 278,543.19, 384,394.23 and 151,218.75

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Solution

The fourth proportional to 278,543.19, 384,394.23 and 151,218.75 is: 208,684.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,543.19 : 384,394.23 = 151,218.75 : x
  2. Step 2: Convert to fraction form
    278,543.19/384,394.23 = 151,218.75/x
  3. Step 3: Cross multiply
    278,543.19x = 384,394.23 × 151,218.75
  4. Step 4: Simplify right side
    278,543.19x = 58,127,614,967.81
  5. Step 5: Solve for x
    x = 58,127,614,967.81/278,543.19
  6. Step 6: Final answer
    x = 208,684.39

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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.