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Finding the Fourth Proportional to 355,283.60, 532,925.40 and 256,139.60

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Solution

The fourth proportional to 355,283.60, 532,925.40 and 256,139.60 is: 384,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,283.60 : 532,925.40 = 256,139.60 : x
  2. Step 2: Convert to fraction form
    355,283.60/532,925.40 = 256,139.60/x
  3. Step 3: Cross multiply
    355,283.60x = 532,925.40 × 256,139.60
  4. Step 4: Simplify right side
    355,283.60x = 136,503,298,785.84
  5. Step 5: Solve for x
    x = 136,503,298,785.84/355,283.60
  6. Step 6: Final answer
    x = 384,209.40

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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.