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Finding the Fourth Proportional to 311,400.81, 429,644.23 and 175,387.23

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Solution

The fourth proportional to 311,400.81, 429,644.23 and 175,387.23 is: 241,984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,400.81 : 429,644.23 = 175,387.23 : x
  2. Step 2: Convert to fraction form
    311,400.81/429,644.23 = 175,387.23/x
  3. Step 3: Cross multiply
    311,400.81x = 429,644.23 × 175,387.23
  4. Step 4: Simplify right side
    311,400.81x = 75,354,110,946.71
  5. Step 5: Solve for x
    x = 75,354,110,946.71/311,400.81
  6. Step 6: Final answer
    x = 241,984.31

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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.