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Finding the Fourth Proportional to 354,585.60, 488,721.60 and 277,603.20

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Solution

The fourth proportional to 354,585.60, 488,721.60 and 277,603.20 is: 382,617.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,585.60 : 488,721.60 = 277,603.20 : x
  2. Step 2: Convert to fraction form
    354,585.60/488,721.60 = 277,603.20/x
  3. Step 3: Cross multiply
    354,585.60x = 488,721.60 × 277,603.20
  4. Step 4: Simplify right side
    354,585.60x = 135,670,680,069.12
  5. Step 5: Solve for x
    x = 135,670,680,069.12/354,585.60
  6. Step 6: Final answer
    x = 382,617.57

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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.