Home / 280,230,331.16-420,385,611.18-86,158,039.34

Finding the Fourth Proportional to 280,230,331.16, 420,385,611.18 and 86,158,039.34

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Solution

The fourth proportional to 280,230,331.16, 420,385,611.18 and 86,158,039.34 is: 129,249,392.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,230,331.16 : 420,385,611.18 = 86,158,039.34 : x
  2. Step 2: Convert to fraction form
    280,230,331.16/420,385,611.18 = 86,158,039.34/x
  3. Step 3: Cross multiply
    280,230,331.16x = 420,385,611.18 × 86,158,039.34
  4. Step 4: Simplify right side
    280,230,331.16x = 36,219,600,026,016,384
  5. Step 5: Solve for x
    x = 36,219,600,026,016,384/280,230,331.16
  6. Step 6: Final answer
    x = 129,249,392.37

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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.