Home / 260,069,019.20-390,091,087.20-87,528,910.40

Finding the Fourth Proportional to 260,069,019.20, 390,091,087.20 and 87,528,910.40

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Solution

The fourth proportional to 260,069,019.20, 390,091,087.20 and 87,528,910.40 is: 131,289,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,069,019.20 : 390,091,087.20 = 87,528,910.40 : x
  2. Step 2: Convert to fraction form
    260,069,019.20/390,091,087.20 = 87,528,910.40/x
  3. Step 3: Cross multiply
    260,069,019.20x = 390,091,087.20 × 87,528,910.40
  4. Step 4: Simplify right side
    260,069,019.20x = 34,144,247,819,367,388
  5. Step 5: Solve for x
    x = 34,144,247,819,367,388/260,069,019.20
  6. Step 6: Final answer
    x = 131,289,178.25

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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.