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Finding the Fourth Proportional to 318,461.95, 439,673.85 and 219,177.64

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Solution

The fourth proportional to 318,461.95, 439,673.85 and 219,177.64 is: 302,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,461.95 : 439,673.85 = 219,177.64 : x
  2. Step 2: Convert to fraction form
    318,461.95/439,673.85 = 219,177.64/x
  3. Step 3: Cross multiply
    318,461.95x = 439,673.85 × 219,177.64
  4. Step 4: Simplify right side
    318,461.95x = 96,366,676,812.71
  5. Step 5: Solve for x
    x = 96,366,676,812.71/318,461.95
  6. Step 6: Final answer
    x = 302,600.28

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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.