Home / 456,470.10-684,705.15-172,116.90

Finding the Fourth Proportional to 456,470.10, 684,705.15 and 172,116.90

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Solution

The fourth proportional to 456,470.10, 684,705.15 and 172,116.90 is: 258,175.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,470.10 : 684,705.15 = 172,116.90 : x
  2. Step 2: Convert to fraction form
    456,470.10/684,705.15 = 172,116.90/x
  3. Step 3: Cross multiply
    456,470.10x = 684,705.15 × 172,116.90
  4. Step 4: Simplify right side
    456,470.10x = 117,849,327,832.04
  5. Step 5: Solve for x
    x = 117,849,327,832.04/456,470.10
  6. Step 6: Final answer
    x = 258,175.35

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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.