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Finding the Fourth Proportional to 288,103.95, 432,155.93 and 77,741.55

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Solution

The fourth proportional to 288,103.95, 432,155.93 and 77,741.55 is: 116,612.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,103.95 : 432,155.93 = 77,741.55 : x
  2. Step 2: Convert to fraction form
    288,103.95/432,155.93 = 77,741.55/x
  3. Step 3: Cross multiply
    288,103.95x = 432,155.93 × 77,741.55
  4. Step 4: Simplify right side
    288,103.95x = 33,596,471,451.18
  5. Step 5: Solve for x
    x = 33,596,471,451.18/288,103.95
  6. Step 6: Final answer
    x = 116,612.33

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.