Home / 287,712,807.20-431,073,199.20-134,043,689.60

Finding the Fourth Proportional to 287,712,807.20, 431,073,199.20 and 134,043,689.60

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Solution

The fourth proportional to 287,712,807.20, 431,073,199.20 and 134,043,689.60 is: 200,834,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,807.20 : 431,073,199.20 = 134,043,689.60 : x
  2. Step 2: Convert to fraction form
    287,712,807.20/431,073,199.20 = 134,043,689.60/x
  3. Step 3: Cross multiply
    287,712,807.20x = 431,073,199.20 × 134,043,689.60
  4. Step 4: Simplify right side
    287,712,807.20x = 57,782,642,108,443,768
  5. Step 5: Solve for x
    x = 57,782,642,108,443,768/287,712,807.20
  6. Step 6: Final answer
    x = 200,834,445.54

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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.