Home / 260,355,990.23-390,510,070.13-87,834,298.40

Finding the Fourth Proportional to 260,355,990.23, 390,510,070.13 and 87,834,298.40

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Solution

The fourth proportional to 260,355,990.23, 390,510,070.13 and 87,834,298.40 is: 131,743,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,355,990.23 : 390,510,070.13 = 87,834,298.40 : x
  2. Step 2: Convert to fraction form
    260,355,990.23/390,510,070.13 = 87,834,298.40/x
  3. Step 3: Cross multiply
    260,355,990.23x = 390,510,070.13 × 87,834,298.40
  4. Step 4: Simplify right side
    260,355,990.23x = 34,300,178,029,436,420
  5. Step 5: Solve for x
    x = 34,300,178,029,436,420/260,355,990.23
  6. Step 6: Final answer
    x = 131,743,379.51

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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.