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Finding the Fourth Proportional to 172,303.79, 258,426.51 and 47,615.63

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Solution

The fourth proportional to 172,303.79, 258,426.51 and 47,615.63 is: 71,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,303.79 : 258,426.51 = 47,615.63 : x
  2. Step 2: Convert to fraction form
    172,303.79/258,426.51 = 47,615.63/x
  3. Step 3: Cross multiply
    172,303.79x = 258,426.51 × 47,615.63
  4. Step 4: Simplify right side
    172,303.79x = 12,305,139,790.22
  5. Step 5: Solve for x
    x = 12,305,139,790.22/172,303.79
  6. Step 6: Final answer
    x = 71,415.38

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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.