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Finding the Fourth Proportional to 345,672.64, 477,066.72 and 218,342.08

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Solution

The fourth proportional to 345,672.64, 477,066.72 and 218,342.08 is: 301,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,672.64 : 477,066.72 = 218,342.08 : x
  2. Step 2: Convert to fraction form
    345,672.64/477,066.72 = 218,342.08/x
  3. Step 3: Cross multiply
    345,672.64x = 477,066.72 × 218,342.08
  4. Step 4: Simplify right side
    345,672.64x = 104,163,739,943.58
  5. Step 5: Solve for x
    x = 104,163,739,943.58/345,672.64
  6. Step 6: Final answer
    x = 301,336.37

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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.