Home / 287,712,799.20-431,073,187.20-134,043,681.60

Finding the Fourth Proportional to 287,712,799.20, 431,073,187.20 and 134,043,681.60

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Solution

The fourth proportional to 287,712,799.20, 431,073,187.20 and 134,043,681.60 is: 200,834,433.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,799.20 : 431,073,187.20 = 134,043,681.60 : x
  2. Step 2: Convert to fraction form
    287,712,799.20/431,073,187.20 = 134,043,681.60/x
  3. Step 3: Cross multiply
    287,712,799.20x = 431,073,187.20 × 134,043,681.60
  4. Step 4: Simplify right side
    287,712,799.20x = 57,782,637,051,333,992
  5. Step 5: Solve for x
    x = 57,782,637,051,333,992/287,712,799.20
  6. Step 6: Final answer
    x = 200,834,433.55

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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.