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Finding the Fourth Proportional to 369,641.20, 554,461.80 and 201,679.60

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Solution

The fourth proportional to 369,641.20, 554,461.80 and 201,679.60 is: 302,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,641.20 : 554,461.80 = 201,679.60 : x
  2. Step 2: Convert to fraction form
    369,641.20/554,461.80 = 201,679.60/x
  3. Step 3: Cross multiply
    369,641.20x = 554,461.80 × 201,679.60
  4. Step 4: Simplify right side
    369,641.20x = 111,823,634,039.28
  5. Step 5: Solve for x
    x = 111,823,634,039.28/369,641.20
  6. Step 6: Final answer
    x = 302,519.40

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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.