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Finding the Fourth Proportional to 401,943.80, 602,915.70 and 165,456.20

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Solution

The fourth proportional to 401,943.80, 602,915.70 and 165,456.20 is: 248,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,943.80 : 602,915.70 = 165,456.20 : x
  2. Step 2: Convert to fraction form
    401,943.80/602,915.70 = 165,456.20/x
  3. Step 3: Cross multiply
    401,943.80x = 602,915.70 × 165,456.20
  4. Step 4: Simplify right side
    401,943.80x = 99,756,140,642.34
  5. Step 5: Solve for x
    x = 99,756,140,642.34/401,943.80
  6. Step 6: Final answer
    x = 248,184.30

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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.