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Finding the Fourth Proportional to 230,779.40, 346,215.90 and 130,987.40

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Solution

The fourth proportional to 230,779.40, 346,215.90 and 130,987.40 is: 196,507.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,779.40 : 346,215.90 = 130,987.40 : x
  2. Step 2: Convert to fraction form
    230,779.40/346,215.90 = 130,987.40/x
  3. Step 3: Cross multiply
    230,779.40x = 346,215.90 × 130,987.40
  4. Step 4: Simplify right side
    230,779.40x = 45,349,920,579.66
  5. Step 5: Solve for x
    x = 45,349,920,579.66/230,779.40
  6. Step 6: Final answer
    x = 196,507.66

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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.