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Finding the Fourth Proportional to 243,007.70, 364,511.55 and 172,148.90

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Solution

The fourth proportional to 243,007.70, 364,511.55 and 172,148.90 is: 258,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,007.70 : 364,511.55 = 172,148.90 : x
  2. Step 2: Convert to fraction form
    243,007.70/364,511.55 = 172,148.90/x
  3. Step 3: Cross multiply
    243,007.70x = 364,511.55 × 172,148.90
  4. Step 4: Simplify right side
    243,007.70x = 62,750,262,369.80
  5. Step 5: Solve for x
    x = 62,750,262,369.80/243,007.70
  6. Step 6: Final answer
    x = 258,223.35

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1.5x scale

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.