Home / 278,459.91-384,275.05-151,135.51

Finding the Fourth Proportional to 278,459.91, 384,275.05 and 151,135.51

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Solution

The fourth proportional to 278,459.91, 384,275.05 and 151,135.51 is: 208,567.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,459.91 : 384,275.05 = 151,135.51 : x
  2. Step 2: Convert to fraction form
    278,459.91/384,275.05 = 151,135.51/x
  3. Step 3: Cross multiply
    278,459.91x = 384,275.05 × 151,135.51
  4. Step 4: Simplify right side
    278,459.91x = 58,077,605,662.03
  5. Step 5: Solve for x
    x = 58,077,605,662.03/278,459.91
  6. Step 6: Final answer
    x = 208,567.21

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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.