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Finding the Fourth Proportional to 290,444.40, 435,731.40 and 112,935.60

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Solution

The fourth proportional to 290,444.40, 435,731.40 and 112,935.60 is: 169,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,444.40 : 435,731.40 = 112,935.60 : x
  2. Step 2: Convert to fraction form
    290,444.40/435,731.40 = 112,935.60/x
  3. Step 3: Cross multiply
    290,444.40x = 435,731.40 × 112,935.60
  4. Step 4: Simplify right side
    290,444.40x = 49,209,587,097.84
  5. Step 5: Solve for x
    x = 49,209,587,097.84/290,444.40
  6. Step 6: Final answer
    x = 169,428.60

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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.