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Finding the Fourth Proportional to 311,421.90, 429,803.91 and 175,482.30

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Solution

The fourth proportional to 311,421.90, 429,803.91 and 175,482.30 is: 242,189.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,421.90 : 429,803.91 = 175,482.30 : x
  2. Step 2: Convert to fraction form
    311,421.90/429,803.91 = 175,482.30/x
  3. Step 3: Cross multiply
    311,421.90x = 429,803.91 × 175,482.30
  4. Step 4: Simplify right side
    311,421.90x = 75,422,978,675.79
  5. Step 5: Solve for x
    x = 75,422,978,675.79/311,421.90
  6. Step 6: Final answer
    x = 242,189.06

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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.