Home / 287,603,362.40-431,405,043.60-239,773,672.40

Finding the Fourth Proportional to 287,603,362.40, 431,405,043.60 and 239,773,672.40

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Solution

The fourth proportional to 287,603,362.40, 431,405,043.60 and 239,773,672.40 is: 359,660,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,603,362.40 : 431,405,043.60 = 239,773,672.40 : x
  2. Step 2: Convert to fraction form
    287,603,362.40/431,405,043.60 = 239,773,672.40/x
  3. Step 3: Cross multiply
    287,603,362.40x = 431,405,043.60 × 239,773,672.40
  4. Step 4: Simplify right side
    287,603,362.40x = 103,439,571,595,854,128
  5. Step 5: Solve for x
    x = 103,439,571,595,854,128/287,603,362.40
  6. Step 6: Final answer
    x = 359,660,508.60

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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.