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Finding the Fourth Proportional to 472,982.80, 709,911.60 and 236,495.20

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Solution

The fourth proportional to 472,982.80, 709,911.60 and 236,495.20 is: 354,961.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,982.80 : 709,911.60 = 236,495.20 : x
  2. Step 2: Convert to fraction form
    472,982.80/709,911.60 = 236,495.20/x
  3. Step 3: Cross multiply
    472,982.80x = 709,911.60 × 236,495.20
  4. Step 4: Simplify right side
    472,982.80x = 167,890,685,824.32
  5. Step 5: Solve for x
    x = 167,890,685,824.32/472,982.80
  6. Step 6: Final answer
    x = 354,961.50

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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.