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Finding the Fourth Proportional to 313,283.43, 432,526.88 and 215,335.30

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Solution

The fourth proportional to 313,283.43, 432,526.88 and 215,335.30 is: 297,297.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,283.43 : 432,526.88 = 215,335.30 : x
  2. Step 2: Convert to fraction form
    313,283.43/432,526.88 = 215,335.30/x
  3. Step 3: Cross multiply
    313,283.43x = 432,526.88 × 215,335.30
  4. Step 4: Simplify right side
    313,283.43x = 93,138,305,462.86
  5. Step 5: Solve for x
    x = 93,138,305,462.86/313,283.43
  6. Step 6: Final answer
    x = 297,297.26

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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.