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Finding the Fourth Proportional to 286,272.20, 429,278.70 and 108,720.20

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Solution

The fourth proportional to 286,272.20, 429,278.70 and 108,720.20 is: 163,031.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,272.20 : 429,278.70 = 108,720.20 : x
  2. Step 2: Convert to fraction form
    286,272.20/429,278.70 = 108,720.20/x
  3. Step 3: Cross multiply
    286,272.20x = 429,278.70 × 108,720.20
  4. Step 4: Simplify right side
    286,272.20x = 46,671,266,119.74
  5. Step 5: Solve for x
    x = 46,671,266,119.74/286,272.20
  6. Step 6: Final answer
    x = 163,031.08

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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.