Home / 278,466.47-384,278.91-151,139.33

Finding the Fourth Proportional to 278,466.47, 384,278.91 and 151,139.33

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Solution

The fourth proportional to 278,466.47, 384,278.91 and 151,139.33 is: 208,569.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,466.47 : 384,278.91 = 151,139.33 : x
  2. Step 2: Convert to fraction form
    278,466.47/384,278.91 = 151,139.33/x
  3. Step 3: Cross multiply
    278,466.47x = 384,278.91 × 151,139.33
  4. Step 4: Simplify right side
    278,466.47x = 58,079,655,463.06
  5. Step 5: Solve for x
    x = 58,079,655,463.06/278,466.47
  6. Step 6: Final answer
    x = 208,569.66

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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.