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Finding the Fourth Proportional to 318,366.40, 439,343.17 and 175,123.30

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Solution

The fourth proportional to 318,366.40, 439,343.17 and 175,123.30 is: 241,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,366.40 : 439,343.17 = 175,123.30 : x
  2. Step 2: Convert to fraction form
    318,366.40/439,343.17 = 175,123.30/x
  3. Step 3: Cross multiply
    318,366.40x = 439,343.17 × 175,123.30
  4. Step 4: Simplify right side
    318,366.40x = 76,939,225,762.86
  5. Step 5: Solve for x
    x = 76,939,225,762.86/318,366.40
  6. Step 6: Final answer
    x = 241,668.80

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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.