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Finding the Fourth Proportional to 218,158.94, 300,811.12 and 153,607.55

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Solution

The fourth proportional to 218,158.94, 300,811.12 and 153,607.55 is: 211,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,158.94 : 300,811.12 = 153,607.55 : x
  2. Step 2: Convert to fraction form
    218,158.94/300,811.12 = 153,607.55/x
  3. Step 3: Cross multiply
    218,158.94x = 300,811.12 × 153,607.55
  4. Step 4: Simplify right side
    218,158.94x = 46,206,859,155.96
  5. Step 5: Solve for x
    x = 46,206,859,155.96/218,158.94
  6. Step 6: Final answer
    x = 211,803.65

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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.