Home / 278,565.19-384,419.95-151,240.80

Finding the Fourth Proportional to 278,565.19, 384,419.95 and 151,240.80

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Solution

The fourth proportional to 278,565.19, 384,419.95 and 151,240.80 is: 208,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,565.19 : 384,419.95 = 151,240.80 : x
  2. Step 2: Convert to fraction form
    278,565.19/384,419.95 = 151,240.80/x
  3. Step 3: Cross multiply
    278,565.19x = 384,419.95 × 151,240.80
  4. Step 4: Simplify right side
    278,565.19x = 58,139,980,773.96
  5. Step 5: Solve for x
    x = 58,139,980,773.96/278,565.19
  6. Step 6: Final answer
    x = 208,712.30

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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.