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Finding the Fourth Proportional to 251,478.40, 377,206.80 and 85,266.40

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Solution

The fourth proportional to 251,478.40, 377,206.80 and 85,266.40 is: 127,895.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,478.40 : 377,206.80 = 85,266.40 : x
  2. Step 2: Convert to fraction form
    251,478.40/377,206.80 = 85,266.40/x
  3. Step 3: Cross multiply
    251,478.40x = 377,206.80 × 85,266.40
  4. Step 4: Simplify right side
    251,478.40x = 32,163,065,891.52
  5. Step 5: Solve for x
    x = 32,163,065,891.52/251,478.40
  6. Step 6: Final answer
    x = 127,895.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.