Home / 278,307.81-383,827.65-213,932.85

Finding the Fourth Proportional to 278,307.81, 383,827.65 and 213,932.85

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Solution

The fourth proportional to 278,307.81, 383,827.65 and 213,932.85 is: 295,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,307.81 : 383,827.65 = 213,932.85 : x
  2. Step 2: Convert to fraction form
    278,307.81/383,827.65 = 213,932.85/x
  3. Step 3: Cross multiply
    278,307.81x = 383,827.65 × 213,932.85
  4. Step 4: Simplify right side
    278,307.81x = 82,113,343,073.30
  5. Step 5: Solve for x
    x = 82,113,343,073.30/278,307.81
  6. Step 6: Final answer
    x = 295,045.05

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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.