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Finding the Fourth Proportional to 313,605.82, 432,779.72 and 170,368.12

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Solution

The fourth proportional to 313,605.82, 432,779.72 and 170,368.12 is: 235,110.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,605.82 : 432,779.72 = 170,368.12 : x
  2. Step 2: Convert to fraction form
    313,605.82/432,779.72 = 170,368.12/x
  3. Step 3: Cross multiply
    313,605.82x = 432,779.72 × 170,368.12
  4. Step 4: Simplify right side
    313,605.82x = 73,731,867,270.53
  5. Step 5: Solve for x
    x = 73,731,867,270.53/313,605.82
  6. Step 6: Final answer
    x = 235,110.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.