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Finding the Fourth Proportional to 309,779.73, 464,618.57 and 99,390.33

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Solution

The fourth proportional to 309,779.73, 464,618.57 and 99,390.33 is: 149,069.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,779.73 : 464,618.57 = 99,390.33 : x
  2. Step 2: Convert to fraction form
    309,779.73/464,618.57 = 99,390.33/x
  3. Step 3: Cross multiply
    309,779.73x = 464,618.57 × 99,390.33
  4. Step 4: Simplify right side
    309,779.73x = 46,178,592,499.48
  5. Step 5: Solve for x
    x = 46,178,592,499.48/309,779.73
  6. Step 6: Final answer
    x = 149,069.12

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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.