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Finding the Fourth Proportional to 615,140.60, 922,710.90 and 171,908.60

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Solution

The fourth proportional to 615,140.60, 922,710.90 and 171,908.60 is: 257,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,140.60 : 922,710.90 = 171,908.60 : x
  2. Step 2: Convert to fraction form
    615,140.60/922,710.90 = 171,908.60/x
  3. Step 3: Cross multiply
    615,140.60x = 922,710.90 × 171,908.60
  4. Step 4: Simplify right side
    615,140.60x = 158,621,939,023.74
  5. Step 5: Solve for x
    x = 158,621,939,023.74/615,140.60
  6. Step 6: Final answer
    x = 257,862.90

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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.