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Finding the Fourth Proportional to 319,031.55, 440,283.15 and 175,791.56

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Solution

The fourth proportional to 319,031.55, 440,283.15 and 175,791.56 is: 242,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,031.55 : 440,283.15 = 175,791.56 : x
  2. Step 2: Convert to fraction form
    319,031.55/440,283.15 = 175,791.56/x
  3. Step 3: Cross multiply
    319,031.55x = 440,283.15 × 175,791.56
  4. Step 4: Simplify right side
    319,031.55x = 77,398,061,780.21
  5. Step 5: Solve for x
    x = 77,398,061,780.21/319,031.55
  6. Step 6: Final answer
    x = 242,603.16

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1.5x scale

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.