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Finding the Fourth Proportional to 535,727.19, 739,254.54 and 317,898.21

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Solution

The fourth proportional to 535,727.19, 739,254.54 and 317,898.21 is: 438,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,727.19 : 739,254.54 = 317,898.21 : x
  2. Step 2: Convert to fraction form
    535,727.19/739,254.54 = 317,898.21/x
  3. Step 3: Cross multiply
    535,727.19x = 739,254.54 × 317,898.21
  4. Step 4: Simplify right side
    535,727.19x = 235,007,695,000.37
  5. Step 5: Solve for x
    x = 235,007,695,000.37/535,727.19
  6. Step 6: Final answer
    x = 438,670.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.