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Finding the Fourth Proportional to 345,502.53, 477,087.84 and 216,657.59

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Solution

The fourth proportional to 345,502.53, 477,087.84 and 216,657.59 is: 299,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,502.53 : 477,087.84 = 216,657.59 : x
  2. Step 2: Convert to fraction form
    345,502.53/477,087.84 = 216,657.59/x
  3. Step 3: Cross multiply
    345,502.53x = 477,087.84 × 216,657.59
  4. Step 4: Simplify right side
    345,502.53x = 103,364,699,247.27
  5. Step 5: Solve for x
    x = 103,364,699,247.27/345,502.53
  6. Step 6: Final answer
    x = 299,172.05

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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.