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Finding the Fourth Proportional to 615,241.17, 921,074.54 and 358,290.32

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Solution

The fourth proportional to 615,241.17, 921,074.54 and 358,290.32 is: 536,394.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,241.17 : 921,074.54 = 358,290.32 : x
  2. Step 2: Convert to fraction form
    615,241.17/921,074.54 = 358,290.32/x
  3. Step 3: Cross multiply
    615,241.17x = 921,074.54 × 358,290.32
  4. Step 4: Simplify right side
    615,241.17x = 330,012,085,283.63
  5. Step 5: Solve for x
    x = 330,012,085,283.63/615,241.17
  6. Step 6: Final answer
    x = 536,394.67

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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.