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Finding the Fourth Proportional to 313,659.90, 432,853.35 and 170,420.22

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Solution

The fourth proportional to 313,659.90, 432,853.35 and 170,420.22 is: 235,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,659.90 : 432,853.35 = 170,420.22 : x
  2. Step 2: Convert to fraction form
    313,659.90/432,853.35 = 170,420.22/x
  3. Step 3: Cross multiply
    313,659.90x = 432,853.35 × 170,420.22
  4. Step 4: Simplify right side
    313,659.90x = 73,766,963,134.74
  5. Step 5: Solve for x
    x = 73,766,963,134.74/313,659.90
  6. Step 6: Final answer
    x = 235,181.36

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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.