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Finding the Fourth Proportional to 313,505.22, 432,642.15 and 177,535.49

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Solution

The fourth proportional to 313,505.22, 432,642.15 and 177,535.49 is: 245,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,505.22 : 432,642.15 = 177,535.49 : x
  2. Step 2: Convert to fraction form
    313,505.22/432,642.15 = 177,535.49/x
  3. Step 3: Cross multiply
    313,505.22x = 432,642.15 × 177,535.49
  4. Step 4: Simplify right side
    313,505.22x = 76,809,333,931.69
  5. Step 5: Solve for x
    x = 76,809,333,931.69/313,505.22
  6. Step 6: Final answer
    x = 245,001.77

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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.