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Finding the Fourth Proportional to 424,806.12, 637,210.98 and 172,091.52

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Solution

The fourth proportional to 424,806.12, 637,210.98 and 172,091.52 is: 258,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,806.12 : 637,210.98 = 172,091.52 : x
  2. Step 2: Convert to fraction form
    424,806.12/637,210.98 = 172,091.52/x
  3. Step 3: Cross multiply
    424,806.12x = 637,210.98 × 172,091.52
  4. Step 4: Simplify right side
    424,806.12x = 109,658,606,108.89
  5. Step 5: Solve for x
    x = 109,658,606,108.89/424,806.12
  6. Step 6: Final answer
    x = 258,138.01

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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.