Home / 520,721.16-781,088.22-165,733.80

Finding the Fourth Proportional to 520,721.16, 781,088.22 and 165,733.80

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Solution

The fourth proportional to 520,721.16, 781,088.22 and 165,733.80 is: 248,602.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,721.16 : 781,088.22 = 165,733.80 : x
  2. Step 2: Convert to fraction form
    520,721.16/781,088.22 = 165,733.80/x
  3. Step 3: Cross multiply
    520,721.16x = 781,088.22 × 165,733.80
  4. Step 4: Simplify right side
    520,721.16x = 129,452,718,835.84
  5. Step 5: Solve for x
    x = 129,452,718,835.84/520,721.16
  6. Step 6: Final answer
    x = 248,602.76

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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.