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Finding the Fourth Proportional to 356,406.70, 534,754.05 and 156,765.10

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Solution

The fourth proportional to 356,406.70, 534,754.05 and 156,765.10 is: 235,210.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,406.70 : 534,754.05 = 156,765.10 : x
  2. Step 2: Convert to fraction form
    356,406.70/534,754.05 = 156,765.10/x
  3. Step 3: Cross multiply
    356,406.70x = 534,754.05 × 156,765.10
  4. Step 4: Simplify right side
    356,406.70x = 83,830,772,123.66
  5. Step 5: Solve for x
    x = 83,830,772,123.66/356,406.70
  6. Step 6: Final answer
    x = 235,210.99

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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.