Home / 430,027.20-644,810.40-180,427.20

Finding the Fourth Proportional to 430,027.20, 644,810.40 and 180,427.20

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Solution

The fourth proportional to 430,027.20, 644,810.40 and 180,427.20 is: 270,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,027.20 : 644,810.40 = 180,427.20 : x
  2. Step 2: Convert to fraction form
    430,027.20/644,810.40 = 180,427.20/x
  3. Step 3: Cross multiply
    430,027.20x = 644,810.40 × 180,427.20
  4. Step 4: Simplify right side
    430,027.20x = 116,341,335,002.88
  5. Step 5: Solve for x
    x = 116,341,335,002.88/430,027.20
  6. Step 6: Final answer
    x = 270,544.13

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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.