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Finding the Fourth Proportional to 247,189.74, 370,663.65 and 172,345.74

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Solution

The fourth proportional to 247,189.74, 370,663.65 and 172,345.74 is: 258,434.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,189.74 : 370,663.65 = 172,345.74 : x
  2. Step 2: Convert to fraction form
    247,189.74/370,663.65 = 172,345.74/x
  3. Step 3: Cross multiply
    247,189.74x = 370,663.65 × 172,345.74
  4. Step 4: Simplify right side
    247,189.74x = 63,882,301,050.35
  5. Step 5: Solve for x
    x = 63,882,301,050.35/247,189.74
  6. Step 6: Final answer
    x = 258,434.27

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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.