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Finding the Fourth Proportional to 311,021.19, 429,210.02 and 175,057.16

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Solution

The fourth proportional to 311,021.19, 429,210.02 and 175,057.16 is: 241,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,021.19 : 429,210.02 = 175,057.16 : x
  2. Step 2: Convert to fraction form
    311,021.19/429,210.02 = 175,057.16/x
  3. Step 3: Cross multiply
    311,021.19x = 429,210.02 × 175,057.16
  4. Step 4: Simplify right side
    311,021.19x = 75,136,285,436.34
  5. Step 5: Solve for x
    x = 75,136,285,436.34/311,021.19
  6. Step 6: Final answer
    x = 241,579.31

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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.