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Finding the Fourth Proportional to 277,948.80, 416,308.80 and 215,126.40

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Solution

The fourth proportional to 277,948.80, 416,308.80 and 215,126.40 is: 322,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,948.80 : 416,308.80 = 215,126.40 : x
  2. Step 2: Convert to fraction form
    277,948.80/416,308.80 = 215,126.40/x
  3. Step 3: Cross multiply
    277,948.80x = 416,308.80 × 215,126.40
  4. Step 4: Simplify right side
    277,948.80x = 89,559,013,432.32
  5. Step 5: Solve for x
    x = 89,559,013,432.32/277,948.80
  6. Step 6: Final answer
    x = 322,214.07

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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.