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Finding the Fourth Proportional to 260,160.66, 390,267 and 70,624.08

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Solution

The fourth proportional to 260,160.66, 390,267 and 70,624.08 is: 105,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,160.66 : 390,267 = 70,624.08 : x
  2. Step 2: Convert to fraction form
    260,160.66/390,267 = 70,624.08/x
  3. Step 3: Cross multiply
    260,160.66x = 390,267 × 70,624.08
  4. Step 4: Simplify right side
    260,160.66x = 27,562,247,829.36
  5. Step 5: Solve for x
    x = 27,562,247,829.36/260,160.66
  6. Step 6: Final answer
    x = 105,943.18

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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.