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Finding the Fourth Proportional to 358,959.60, 538,439.40 and 122,569.20

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Solution

The fourth proportional to 358,959.60, 538,439.40 and 122,569.20 is: 183,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,959.60 : 538,439.40 = 122,569.20 : x
  2. Step 2: Convert to fraction form
    358,959.60/538,439.40 = 122,569.20/x
  3. Step 3: Cross multiply
    358,959.60x = 538,439.40 × 122,569.20
  4. Step 4: Simplify right side
    358,959.60x = 65,996,086,506.48
  5. Step 5: Solve for x
    x = 65,996,086,506.48/358,959.60
  6. Step 6: Final answer
    x = 183,853.80

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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.