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Finding the Fourth Proportional to 403,571.60, 604,925.40 and 137,085.20

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Solution

The fourth proportional to 403,571.60, 604,925.40 and 137,085.20 is: 205,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,571.60 : 604,925.40 = 137,085.20 : x
  2. Step 2: Convert to fraction form
    403,571.60/604,925.40 = 137,085.20/x
  3. Step 3: Cross multiply
    403,571.60x = 604,925.40 × 137,085.20
  4. Step 4: Simplify right side
    403,571.60x = 82,926,319,444.08
  5. Step 5: Solve for x
    x = 82,926,319,444.08/403,571.60
  6. Step 6: Final answer
    x = 205,481.06

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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.