Home / 217,401.30-326,134.35-77,148.18

Finding the Fourth Proportional to 217,401.30, 326,134.35 and 77,148.18

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Solution

The fourth proportional to 217,401.30, 326,134.35 and 77,148.18 is: 115,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,401.30 : 326,134.35 = 77,148.18 : x
  2. Step 2: Convert to fraction form
    217,401.30/326,134.35 = 77,148.18/x
  3. Step 3: Cross multiply
    217,401.30x = 326,134.35 × 77,148.18
  4. Step 4: Simplify right side
    217,401.30x = 25,160,671,537.98
  5. Step 5: Solve for x
    x = 25,160,671,537.98/217,401.30
  6. Step 6: Final answer
    x = 115,733.77

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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.