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Finding the Fourth Proportional to 487,539.60, 731,017.80 and 251,343.60

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Solution

The fourth proportional to 487,539.60, 731,017.80 and 251,343.60 is: 376,865.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,539.60 : 731,017.80 = 251,343.60 : x
  2. Step 2: Convert to fraction form
    487,539.60/731,017.80 = 251,343.60/x
  3. Step 3: Cross multiply
    487,539.60x = 731,017.80 × 251,343.60
  4. Step 4: Simplify right side
    487,539.60x = 183,736,645,516.08
  5. Step 5: Solve for x
    x = 183,736,645,516.08/487,539.60
  6. Step 6: Final answer
    x = 376,865.07

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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.