Home / 287,185.02-431,043.51-145,130.28

Finding the Fourth Proportional to 287,185.02, 431,043.51 and 145,130.28

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Solution

The fourth proportional to 287,185.02, 431,043.51 and 145,130.28 is: 217,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,185.02 : 431,043.51 = 145,130.28 : x
  2. Step 2: Convert to fraction form
    287,185.02/431,043.51 = 145,130.28/x
  3. Step 3: Cross multiply
    287,185.02x = 431,043.51 × 145,130.28
  4. Step 4: Simplify right side
    287,185.02x = 62,557,465,298.48
  5. Step 5: Solve for x
    x = 62,557,465,298.48/287,185.02
  6. Step 6: Final answer
    x = 217,829.83

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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.