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Finding the Fourth Proportional to 314,725.88, 434,499.72 and 218,070.20

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Solution

The fourth proportional to 314,725.88, 434,499.72 and 218,070.20 is: 301,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,725.88 : 434,499.72 = 218,070.20 : x
  2. Step 2: Convert to fraction form
    314,725.88/434,499.72 = 218,070.20/x
  3. Step 3: Cross multiply
    314,725.88x = 434,499.72 × 218,070.20
  4. Step 4: Simplify right side
    314,725.88x = 94,751,440,840.34
  5. Step 5: Solve for x
    x = 94,751,440,840.34/314,725.88
  6. Step 6: Final answer
    x = 301,060.21

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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.