Home / 311,870.07-430,380.95-168,630.21

Finding the Fourth Proportional to 311,870.07, 430,380.95 and 168,630.21

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Solution

The fourth proportional to 311,870.07, 430,380.95 and 168,630.21 is: 232,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,870.07 : 430,380.95 = 168,630.21 : x
  2. Step 2: Convert to fraction form
    311,870.07/430,380.95 = 168,630.21/x
  3. Step 3: Cross multiply
    311,870.07x = 430,380.95 × 168,630.21
  4. Step 4: Simplify right side
    311,870.07x = 72,575,229,135.35
  5. Step 5: Solve for x
    x = 72,575,229,135.35/311,870.07
  6. Step 6: Final answer
    x = 232,709.82

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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.