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Finding the Fourth Proportional to 356,425.70, 534,782.55 and 156,784.10

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Solution

The fourth proportional to 356,425.70, 534,782.55 and 156,784.10 is: 235,239.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,425.70 : 534,782.55 = 156,784.10 : x
  2. Step 2: Convert to fraction form
    356,425.70/534,782.55 = 156,784.10/x
  3. Step 3: Cross multiply
    356,425.70x = 534,782.55 × 156,784.10
  4. Step 4: Simplify right side
    356,425.70x = 83,845,400,797.46
  5. Step 5: Solve for x
    x = 83,845,400,797.46/356,425.70
  6. Step 6: Final answer
    x = 235,239.49

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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.