Home / 311,155.29-429,399.77-183,830.58

Finding the Fourth Proportional to 311,155.29, 429,399.77 and 183,830.58

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Solution

The fourth proportional to 311,155.29, 429,399.77 and 183,830.58 is: 253,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,155.29 : 429,399.77 = 183,830.58 : x
  2. Step 2: Convert to fraction form
    311,155.29/429,399.77 = 183,830.58/x
  3. Step 3: Cross multiply
    311,155.29x = 429,399.77 × 183,830.58
  4. Step 4: Simplify right side
    311,155.29x = 78,936,807,851.81
  5. Step 5: Solve for x
    x = 78,936,807,851.81/311,155.29
  6. Step 6: Final answer
    x = 253,689.43

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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.