Home / 260,011,384.80-390,017,077.20-87,430,840.80

Finding the Fourth Proportional to 260,011,384.80, 390,017,077.20 and 87,430,840.80

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Solution

The fourth proportional to 260,011,384.80, 390,017,077.20 and 87,430,840.80 is: 131,146,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,011,384.80 : 390,017,077.20 = 87,430,840.80 : x
  2. Step 2: Convert to fraction form
    260,011,384.80/390,017,077.20 = 87,430,840.80/x
  3. Step 3: Cross multiply
    260,011,384.80x = 390,017,077.20 × 87,430,840.80
  4. Step 4: Simplify right side
    260,011,384.80x = 34,099,520,985,954,508
  5. Step 5: Solve for x
    x = 34,099,520,985,954,508/260,011,384.80
  6. Step 6: Final answer
    x = 131,146,261.20

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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.