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Finding the Fourth Proportional to 615,312.20, 922,881.90 and 194,630.60

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Solution

The fourth proportional to 615,312.20, 922,881.90 and 194,630.60 is: 291,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,312.20 : 922,881.90 = 194,630.60 : x
  2. Step 2: Convert to fraction form
    615,312.20/922,881.90 = 194,630.60/x
  3. Step 3: Cross multiply
    615,312.20x = 922,881.90 × 194,630.60
  4. Step 4: Simplify right side
    615,312.20x = 179,621,057,926.14
  5. Step 5: Solve for x
    x = 179,621,057,926.14/615,312.20
  6. Step 6: Final answer
    x = 291,918.57

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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.