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Finding the Fourth Proportional to 272,315.70, 407,501.55 and 172,523.70

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Solution

The fourth proportional to 272,315.70, 407,501.55 and 172,523.70 is: 258,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,315.70 : 407,501.55 = 172,523.70 : x
  2. Step 2: Convert to fraction form
    272,315.70/407,501.55 = 172,523.70/x
  3. Step 3: Cross multiply
    272,315.70x = 407,501.55 × 172,523.70
  4. Step 4: Simplify right side
    272,315.70x = 70,303,675,161.74
  5. Step 5: Solve for x
    x = 70,303,675,161.74/272,315.70
  6. Step 6: Final answer
    x = 258,169.75

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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.