Home / 415,776.40-623,729.96-135,228.04

Finding the Fourth Proportional to 415,776.40, 623,729.96 and 135,228.04

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Solution

The fourth proportional to 415,776.40, 623,729.96 and 135,228.04 is: 202,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,776.40 : 623,729.96 = 135,228.04 : x
  2. Step 2: Convert to fraction form
    415,776.40/623,729.96 = 135,228.04/x
  3. Step 3: Cross multiply
    415,776.40x = 623,729.96 × 135,228.04
  4. Step 4: Simplify right side
    415,776.40x = 84,345,779,980.08
  5. Step 5: Solve for x
    x = 84,345,779,980.08/415,776.40
  6. Step 6: Final answer
    x = 202,863.32

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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.