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Finding the Fourth Proportional to 315,168.61, 434,953.25 and 179,215.21

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Solution

The fourth proportional to 315,168.61, 434,953.25 and 179,215.21 is: 247,328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,168.61 : 434,953.25 = 179,215.21 : x
  2. Step 2: Convert to fraction form
    315,168.61/434,953.25 = 179,215.21/x
  3. Step 3: Cross multiply
    315,168.61x = 434,953.25 × 179,215.21
  4. Step 4: Simplify right side
    315,168.61x = 77,950,238,038.93
  5. Step 5: Solve for x
    x = 77,950,238,038.93/315,168.61
  6. Step 6: Final answer
    x = 247,328.69

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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.