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Finding the Fourth Proportional to 763,383, 1,145,074.56 and 238,071

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Solution

The fourth proportional to 763,383, 1,145,074.56 and 238,071 is: 357,106.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,383 : 1,145,074.56 = 238,071 : x
  2. Step 2: Convert to fraction form
    763,383/1,145,074.56 = 238,071/x
  3. Step 3: Cross multiply
    763,383x = 1,145,074.56 × 238,071
  4. Step 4: Simplify right side
    763,383x = 272,609,045,573.76
  5. Step 5: Solve for x
    x = 272,609,045,573.76/763,383
  6. Step 6: Final answer
    x = 357,106.52

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1.5x scale

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.