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Finding the Fourth Proportional to 286,271.60, 429,407.40 and 251,279.60

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Solution

The fourth proportional to 286,271.60, 429,407.40 and 251,279.60 is: 376,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,271.60 : 429,407.40 = 251,279.60 : x
  2. Step 2: Convert to fraction form
    286,271.60/429,407.40 = 251,279.60/x
  3. Step 3: Cross multiply
    286,271.60x = 429,407.40 × 251,279.60
  4. Step 4: Simplify right side
    286,271.60x = 107,901,319,709.04
  5. Step 5: Solve for x
    x = 107,901,319,709.04/286,271.60
  6. Step 6: Final answer
    x = 376,919.40

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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.