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Finding the Fourth Proportional to 520,844.72, 781,341.93 and 161,043.63

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Solution

The fourth proportional to 520,844.72, 781,341.93 and 161,043.63 is: 241,588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,844.72 : 781,341.93 = 161,043.63 : x
  2. Step 2: Convert to fraction form
    520,844.72/781,341.93 = 161,043.63/x
  3. Step 3: Cross multiply
    520,844.72x = 781,341.93 × 161,043.63
  4. Step 4: Simplify right side
    520,844.72x = 125,830,140,678.41
  5. Step 5: Solve for x
    x = 125,830,140,678.41/520,844.72
  6. Step 6: Final answer
    x = 241,588.59

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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.