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Finding the Fourth Proportional to 615,064.80, 922,721.72 and 260,078.24

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Solution

The fourth proportional to 615,064.80, 922,721.72 and 260,078.24 is: 390,170.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,064.80 : 922,721.72 = 260,078.24 : x
  2. Step 2: Convert to fraction form
    615,064.80/922,721.72 = 260,078.24/x
  3. Step 3: Cross multiply
    615,064.80x = 922,721.72 × 260,078.24
  4. Step 4: Simplify right side
    615,064.80x = 239,979,840,947.37
  5. Step 5: Solve for x
    x = 239,979,840,947.37/615,064.80
  6. Step 6: Final answer
    x = 390,170.01

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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.