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Finding the Fourth Proportional to 406,266.55, 609,398.30 and 121,955.87

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Solution

The fourth proportional to 406,266.55, 609,398.30 and 121,955.87 is: 182,933.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,266.55 : 609,398.30 = 121,955.87 : x
  2. Step 2: Convert to fraction form
    406,266.55/609,398.30 = 121,955.87/x
  3. Step 3: Cross multiply
    406,266.55x = 609,398.30 × 121,955.87
  4. Step 4: Simplify right side
    406,266.55x = 74,319,701,681.41
  5. Step 5: Solve for x
    x = 74,319,701,681.41/406,266.55
  6. Step 6: Final answer
    x = 182,933.35

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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.