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Finding the Fourth Proportional to 369,039.60, 553,559.40 and 132,406.20

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Solution

The fourth proportional to 369,039.60, 553,559.40 and 132,406.20 is: 198,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,039.60 : 553,559.40 = 132,406.20 : x
  2. Step 2: Convert to fraction form
    369,039.60/553,559.40 = 132,406.20/x
  3. Step 3: Cross multiply
    369,039.60x = 553,559.40 × 132,406.20
  4. Step 4: Simplify right side
    369,039.60x = 73,294,696,628.28
  5. Step 5: Solve for x
    x = 73,294,696,628.28/369,039.60
  6. Step 6: Final answer
    x = 198,609.30

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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.