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Finding the Fourth Proportional to 289,988.40, 435,151.94 and 121,494.32

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Solution

The fourth proportional to 289,988.40, 435,151.94 and 121,494.32 is: 182,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,988.40 : 435,151.94 = 121,494.32 : x
  2. Step 2: Convert to fraction form
    289,988.40/435,151.94 = 121,494.32/x
  3. Step 3: Cross multiply
    289,988.40x = 435,151.94 × 121,494.32
  4. Step 4: Simplify right side
    289,988.40x = 52,868,486,263.75
  5. Step 5: Solve for x
    x = 52,868,486,263.75/289,988.40
  6. Step 6: Final answer
    x = 182,312.42

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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.