Home / 288,970.20-432,872.10-164,165.40

Finding the Fourth Proportional to 288,970.20, 432,872.10 and 164,165.40

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Solution

The fourth proportional to 288,970.20, 432,872.10 and 164,165.40 is: 245,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,970.20 : 432,872.10 = 164,165.40 : x
  2. Step 2: Convert to fraction form
    288,970.20/432,872.10 = 164,165.40/x
  3. Step 3: Cross multiply
    288,970.20x = 432,872.10 × 164,165.40
  4. Step 4: Simplify right side
    288,970.20x = 71,062,621,445.34
  5. Step 5: Solve for x
    x = 71,062,621,445.34/288,970.20
  6. Step 6: Final answer
    x = 245,916.78

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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.