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Finding the Fourth Proportional to 290,278.71, 435,583.89 and 112,762.62

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Solution

The fourth proportional to 290,278.71, 435,583.89 and 112,762.62 is: 169,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,278.71 : 435,583.89 = 112,762.62 : x
  2. Step 2: Convert to fraction form
    290,278.71/435,583.89 = 112,762.62/x
  3. Step 3: Cross multiply
    290,278.71x = 435,583.89 × 112,762.62
  4. Step 4: Simplify right side
    290,278.71x = 49,117,580,666.19
  5. Step 5: Solve for x
    x = 49,117,580,666.19/290,278.71
  6. Step 6: Final answer
    x = 169,208.35

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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.