Home / 287,428.02-431,326.55-192,765.10

Finding the Fourth Proportional to 287,428.02, 431,326.55 and 192,765.10

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Solution

The fourth proportional to 287,428.02, 431,326.55 and 192,765.10 is: 289,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,428.02 : 431,326.55 = 192,765.10 : x
  2. Step 2: Convert to fraction form
    287,428.02/431,326.55 = 192,765.10/x
  3. Step 3: Cross multiply
    287,428.02x = 431,326.55 × 192,765.10
  4. Step 4: Simplify right side
    287,428.02x = 83,144,704,579.58
  5. Step 5: Solve for x
    x = 83,144,704,579.58/287,428.02
  6. Step 6: Final answer
    x = 289,271.40

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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.