Home / 421,746.04-632,619.48-172,428.04

Finding the Fourth Proportional to 421,746.04, 632,619.48 and 172,428.04

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Solution

The fourth proportional to 421,746.04, 632,619.48 and 172,428.04 is: 258,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,746.04 : 632,619.48 = 172,428.04 : x
  2. Step 2: Convert to fraction form
    421,746.04/632,619.48 = 172,428.04/x
  3. Step 3: Cross multiply
    421,746.04x = 632,619.48 × 172,428.04
  4. Step 4: Simplify right side
    421,746.04x = 109,081,337,002.22
  5. Step 5: Solve for x
    x = 109,081,337,002.22/421,746.04
  6. Step 6: Final answer
    x = 258,642.23

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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.