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Finding the Fourth Proportional to 277,421.20, 416,131.80 and 245,280.40

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Solution

The fourth proportional to 277,421.20, 416,131.80 and 245,280.40 is: 367,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,421.20 : 416,131.80 = 245,280.40 : x
  2. Step 2: Convert to fraction form
    277,421.20/416,131.80 = 245,280.40/x
  3. Step 3: Cross multiply
    277,421.20x = 416,131.80 × 245,280.40
  4. Step 4: Simplify right side
    277,421.20x = 102,068,974,356.72
  5. Step 5: Solve for x
    x = 102,068,974,356.72/277,421.20
  6. Step 6: Final answer
    x = 367,920.60

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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.