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Finding the Fourth Proportional to 615,040.30, 922,684.98 and 260,053.74

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Solution

The fourth proportional to 615,040.30, 922,684.98 and 260,053.74 is: 390,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,040.30 : 922,684.98 = 260,053.74 : x
  2. Step 2: Convert to fraction form
    615,040.30/922,684.98 = 260,053.74/x
  3. Step 3: Cross multiply
    615,040.30x = 922,684.98 × 260,053.74
  4. Step 4: Simplify right side
    615,040.30x = 239,947,679,890.83
  5. Step 5: Solve for x
    x = 239,947,679,890.83/615,040.30
  6. Step 6: Final answer
    x = 390,133.26

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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.