Home / 215,838.77-298,045.55-135,404.55

Finding the Fourth Proportional to 215,838.77, 298,045.55 and 135,404.55

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Solution

The fourth proportional to 215,838.77, 298,045.55 and 135,404.55 is: 186,976.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,838.77 : 298,045.55 = 135,404.55 : x
  2. Step 2: Convert to fraction form
    215,838.77/298,045.55 = 135,404.55/x
  3. Step 3: Cross multiply
    215,838.77x = 298,045.55 × 135,404.55
  4. Step 4: Simplify right side
    215,838.77x = 40,356,723,915.76
  5. Step 5: Solve for x
    x = 40,356,723,915.76/215,838.77
  6. Step 6: Final answer
    x = 186,976.25

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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.