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Finding the Fourth Proportional to 260,160.69, 390,267.09 and 70,624.20

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Solution

The fourth proportional to 260,160.69, 390,267.09 and 70,624.20 is: 105,943.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,160.69 : 390,267.09 = 70,624.20 : x
  2. Step 2: Convert to fraction form
    260,160.69/390,267.09 = 70,624.20/x
  3. Step 3: Cross multiply
    260,160.69x = 390,267.09 × 70,624.20
  4. Step 4: Simplify right side
    260,160.69x = 27,562,301,017.58
  5. Step 5: Solve for x
    x = 27,562,301,017.58/260,160.69
  6. Step 6: Final answer
    x = 105,943.37

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1.5x scale

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.