Home / 286,421.25-429,829.11-99,432.75

Finding the Fourth Proportional to 286,421.25, 429,829.11 and 99,432.75

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Solution

The fourth proportional to 286,421.25, 429,829.11 and 99,432.75 is: 149,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,421.25 : 429,829.11 = 99,432.75 : x
  2. Step 2: Convert to fraction form
    286,421.25/429,829.11 = 99,432.75/x
  3. Step 3: Cross multiply
    286,421.25x = 429,829.11 × 99,432.75
  4. Step 4: Simplify right side
    286,421.25x = 42,739,090,437.35
  5. Step 5: Solve for x
    x = 42,739,090,437.35/286,421.25
  6. Step 6: Final answer
    x = 149,217.60

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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.