Home / 287,558.20-431,337.30-130,094.20

Finding the Fourth Proportional to 287,558.20, 431,337.30 and 130,094.20

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Solution

The fourth proportional to 287,558.20, 431,337.30 and 130,094.20 is: 195,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,558.20 : 431,337.30 = 130,094.20 : x
  2. Step 2: Convert to fraction form
    287,558.20/431,337.30 = 130,094.20/x
  3. Step 3: Cross multiply
    287,558.20x = 431,337.30 × 130,094.20
  4. Step 4: Simplify right side
    287,558.20x = 56,114,480,973.66
  5. Step 5: Solve for x
    x = 56,114,480,973.66/287,558.20
  6. Step 6: Final answer
    x = 195,141.30

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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.