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Finding the Fourth Proportional to 360,638.40, 540,957.60 and 111,320.40

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Solution

The fourth proportional to 360,638.40, 540,957.60 and 111,320.40 is: 166,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,638.40 : 540,957.60 = 111,320.40 : x
  2. Step 2: Convert to fraction form
    360,638.40/540,957.60 = 111,320.40/x
  3. Step 3: Cross multiply
    360,638.40x = 540,957.60 × 111,320.40
  4. Step 4: Simplify right side
    360,638.40x = 60,219,616,415.04
  5. Step 5: Solve for x
    x = 60,219,616,415.04/360,638.40
  6. Step 6: Final answer
    x = 166,980.60

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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.