Home / 287,731.02-431,596.53-121,520.46

Finding the Fourth Proportional to 287,731.02, 431,596.53 and 121,520.46

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Solution

The fourth proportional to 287,731.02, 431,596.53 and 121,520.46 is: 182,280.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,731.02 : 431,596.53 = 121,520.46 : x
  2. Step 2: Convert to fraction form
    287,731.02/431,596.53 = 121,520.46/x
  3. Step 3: Cross multiply
    287,731.02x = 431,596.53 × 121,520.46
  4. Step 4: Simplify right side
    287,731.02x = 52,447,808,860.00
  5. Step 5: Solve for x
    x = 52,447,808,860.00/287,731.02
  6. Step 6: Final answer
    x = 182,280.69

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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.