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Finding the Fourth Proportional to 315,018.40, 434,709.65 and 179,034.39

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Solution

The fourth proportional to 315,018.40, 434,709.65 and 179,034.39 is: 247,058.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,018.40 : 434,709.65 = 179,034.39 : x
  2. Step 2: Convert to fraction form
    315,018.40/434,709.65 = 179,034.39/x
  3. Step 3: Cross multiply
    315,018.40x = 434,709.65 × 179,034.39
  4. Step 4: Simplify right side
    315,018.40x = 77,827,977,014.86
  5. Step 5: Solve for x
    x = 77,827,977,014.86/315,018.40
  6. Step 6: Final answer
    x = 247,058.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.