Home / 287,425,241.60-431,137,862.40-82,959,987.20

Finding the Fourth Proportional to 287,425,241.60, 431,137,862.40 and 82,959,987.20

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Solution

The fourth proportional to 287,425,241.60, 431,137,862.40 and 82,959,987.20 is: 124,439,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,425,241.60 : 431,137,862.40 = 82,959,987.20 : x
  2. Step 2: Convert to fraction form
    287,425,241.60/431,137,862.40 = 82,959,987.20/x
  3. Step 3: Cross multiply
    287,425,241.60x = 431,137,862.40 × 82,959,987.20
  4. Step 4: Simplify right side
    287,425,241.60x = 35,767,191,546,139,360
  5. Step 5: Solve for x
    x = 35,767,191,546,139,360/287,425,241.60
  6. Step 6: Final answer
    x = 124,439,980.80

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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.