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Finding the Fourth Proportional to 286,713.70, 430,070.55 and 235,975.30

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Solution

The fourth proportional to 286,713.70, 430,070.55 and 235,975.30 is: 353,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,713.70 : 430,070.55 = 235,975.30 : x
  2. Step 2: Convert to fraction form
    286,713.70/430,070.55 = 235,975.30/x
  3. Step 3: Cross multiply
    286,713.70x = 430,070.55 × 235,975.30
  4. Step 4: Simplify right side
    286,713.70x = 101,486,027,057.42
  5. Step 5: Solve for x
    x = 101,486,027,057.42/286,713.70
  6. Step 6: Final answer
    x = 353,962.95

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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.