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Finding the Fourth Proportional to 571,603.72, 857,405.12 and 172,244.49

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Solution

The fourth proportional to 571,603.72, 857,405.12 and 172,244.49 is: 258,366.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,603.72 : 857,405.12 = 172,244.49 : x
  2. Step 2: Convert to fraction form
    571,603.72/857,405.12 = 172,244.49/x
  3. Step 3: Cross multiply
    571,603.72x = 857,405.12 × 172,244.49
  4. Step 4: Simplify right side
    571,603.72x = 147,683,307,617.79
  5. Step 5: Solve for x
    x = 147,683,307,617.79/571,603.72
  6. Step 6: Final answer
    x = 258,366.60

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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.