Home / 318,715.12-439,817.34-175,474.72

Finding the Fourth Proportional to 318,715.12, 439,817.34 and 175,474.72

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Solution

The fourth proportional to 318,715.12, 439,817.34 and 175,474.72 is: 242,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,715.12 : 439,817.34 = 175,474.72 : x
  2. Step 2: Convert to fraction form
    318,715.12/439,817.34 = 175,474.72/x
  3. Step 3: Cross multiply
    318,715.12x = 439,817.34 × 175,474.72
  4. Step 4: Simplify right side
    318,715.12x = 77,176,824,587.64
  5. Step 5: Solve for x
    x = 77,176,824,587.64/318,715.12
  6. Step 6: Final answer
    x = 242,149.87

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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.