Home / 287,603,350.40-431,405,025.60-239,773,660.40

Finding the Fourth Proportional to 287,603,350.40, 431,405,025.60 and 239,773,660.40

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Solution

The fourth proportional to 287,603,350.40, 431,405,025.60 and 239,773,660.40 is: 359,660,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,603,350.40 : 431,405,025.60 = 239,773,660.40 : x
  2. Step 2: Convert to fraction form
    287,603,350.40/431,405,025.60 = 239,773,660.40/x
  3. Step 3: Cross multiply
    287,603,350.40x = 431,405,025.60 × 239,773,660.40
  4. Step 4: Simplify right side
    287,603,350.40x = 103,439,562,103,067,712
  5. Step 5: Solve for x
    x = 103,439,562,103,067,712/287,603,350.40
  6. Step 6: Final answer
    x = 359,660,490.60

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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.