Home / 260,603,388.90-390,953,140.11-85,736,264.58

Finding the Fourth Proportional to 260,603,388.90, 390,953,140.11 and 85,736,264.58

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Solution

The fourth proportional to 260,603,388.90, 390,953,140.11 and 85,736,264.58 is: 128,620,207.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,603,388.90 : 390,953,140.11 = 85,736,264.58 : x
  2. Step 2: Convert to fraction form
    260,603,388.90/390,953,140.11 = 85,736,264.58/x
  3. Step 3: Cross multiply
    260,603,388.90x = 390,953,140.11 × 85,736,264.58
  4. Step 4: Simplify right side
    260,603,388.90x = 33,518,861,858,852,772
  5. Step 5: Solve for x
    x = 33,518,861,858,852,772/260,603,388.90
  6. Step 6: Final answer
    x = 128,620,207.13

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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.