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Finding the Fourth Proportional to 286,059.80, 429,089.70 and 272,937.80

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Solution

The fourth proportional to 286,059.80, 429,089.70 and 272,937.80 is: 409,406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,059.80 : 429,089.70 = 272,937.80 : x
  2. Step 2: Convert to fraction form
    286,059.80/429,089.70 = 272,937.80/x
  3. Step 3: Cross multiply
    286,059.80x = 429,089.70 × 272,937.80
  4. Step 4: Simplify right side
    286,059.80x = 117,114,798,720.66
  5. Step 5: Solve for x
    x = 117,114,798,720.66/286,059.80
  6. Step 6: Final answer
    x = 409,406.70

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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.